Quarterly report pursuant to Section 13 or 15(d)

STOCK OPTIONS AND WARRANTS (Details - Options by exercise price)

v3.22.2.2
STOCK OPTIONS AND WARRANTS (Details - Options by exercise price)
6 Months Ended
Oct. 31, 2022
$ / shares
shares
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 37,936
Weighted Average Remaining Contractual LIfe (years) 1 year 18 days
Weighted Average Exercisable Price | $ / shares $ 46.51
Numer of Options Exercisable | shares 37,603
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 46.90
$83.70 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 6,000
Weighted Average Remaining Contractual LIfe (years) 1 month 6 days
Weighted Average Exercisable Price | $ / shares $ 83.70
Numer of Options Exercisable | shares 6,000
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 83.70
$80.10 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 800
Weighted Average Remaining Contractual LIfe (years) 10 months 6 days
Weighted Average Exercisable Price | $ / shares $ 80.10
Numer of Options Exercisable | shares 800
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 80.10
$80.85 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 667
Weighted Average Remaining Contractual LIfe (years) 3 months
Weighted Average Exercisable Price | $ / shares $ 80.85
Numer of Options Exercisable | shares 667
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 80.85
$102.45 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 333
Weighted Average Remaining Contractual LIfe (years) 3 months 29 days
Weighted Average Exercisable Price | $ / shares $ 102.45
Numer of Options Exercisable | shares 333
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 102.45
$97.35 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 333
Weighted Average Remaining Contractual LIfe (years) 5 months 19 days
Weighted Average Exercisable Price | $ / shares $ 97.35
Numer of Options Exercisable | shares 333
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 97.35
$74.25 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 6,000
Weighted Average Remaining Contractual LIfe (years) 9 months 29 days
Weighted Average Exercisable Price | $ / shares $ 74.25
Numer of Options Exercisable | shares 6,000
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 74.25
$57.00 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 800
Weighted Average Remaining Contractual LIfe (years) 1 year 10 months 24 days
Weighted Average Exercisable Price | $ / shares $ 57.00
Numer of Options Exercisable | shares 800
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 57.00
$60.60 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 667
Weighted Average Remaining Contractual LIfe (years) 9 months
Weighted Average Exercisable Price | $ / shares $ 60.60
Numer of Options Exercisable | shares 667
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 60.60
$55.50 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 333
Weighted Average Remaining Contractual LIfe (years) 9 months 29 days
Weighted Average Exercisable Price | $ / shares $ 55.50
Numer of Options Exercisable | shares 333
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 55.50
$51.00 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 333
Weighted Average Remaining Contractual LIfe (years) 11 months 19 days
Weighted Average Exercisable Price | $ / shares $ 51.00
Numer of Options Exercisable | shares 333
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 51.00
$61.20 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 6,000
Weighted Average Remaining Contractual LIfe (years) 1 year 3 months 21 days
Weighted Average Exercisable Price | $ / shares $ 61.20
Numer of Options Exercisable | shares 6,000
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 61.20
$36.00 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 667
Weighted Average Remaining Contractual LIfe (years) 1 year 3 months
Weighted Average Exercisable Price | $ / shares $ 36.00
Numer of Options Exercisable | shares 667
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 36.00
$37.05 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 333
Weighted Average Remaining Contractual LIfe (years) 1 year 3 months 29 days
Weighted Average Exercisable Price | $ / shares $ 37.05
Numer of Options Exercisable | shares 333
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 37.05
$15.75 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 333
Weighted Average Remaining Contractual LIfe (years) 1 year 5 months 19 days
Weighted Average Exercisable Price | $ / shares $ 15.70
Numer of Options Exercisable | shares 333
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 15.70
$10.05 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 6,000
Weighted Average Remaining Contractual LIfe (years) 1 year 10 months 24 days
Weighted Average Exercisable Price | $ / shares $ 10.05
Numer of Options Exercisable | shares 6,000
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 10.05
$26.55 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 667
Weighted Average Remaining Contractual LIfe (years) 1 year 9 months
Weighted Average Exercisable Price | $ / shares $ 26.55
Numer of Options Exercisable | shares 667
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 26.55
$16.20 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 334
Weighted Average Remaining Contractual LIfe (years) 1 year 9 months 29 days
Weighted Average Exercisable Price | $ / shares $ 16.20
Numer of Options Exercisable | shares 334
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 16.20
$3.19 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 334
Weighted Average Remaining Contractual LIfe (years) 1 year 11 months 19 days
Weighted Average Exercisable Price | $ / shares $ 3.19
Numer of Options Exercisable | shares 334
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 3.19
$2.50 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 6,000
Weighted Average Remaining Contractual LIfe (years) 2 years 6 months
Weighted Average Exercisable Price | $ / shares $ 2.50
Numer of Options Exercisable | shares 5,667
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 2.50
$2.29 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 668
Weighted Average Remaining Contractual LIfe (years) 2 years 3 months
Weighted Average Exercisable Price | $ / shares $ 2.29
Numer of Options Exercisable | shares 668
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 2.29
$2.24 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Options | shares 334
Weighted Average Remaining Contractual LIfe (years) 2 years 3 months 29 days
Weighted Average Exercisable Price | $ / shares $ 2.24
Numer of Options Exercisable | shares 334
Weighted Average Exercise Price of Exercisable Options | $ / shares $ 2.24