Annual report pursuant to Section 13 and 15(d)

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

v3.22.2
STOCK OPTIONS AND WARRANTS (Details - Warrants by exercise price)
 12 Months Ended
Apr. 30, 2022
$ / shares
shares
$37.50 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 37.50
Number of Warrants exercisable | shares 1,333
Weighted Average Remaining Contractual Life (Years) 2 months 26 days
$45.00 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 45.00
Number of Warrants exercisable | shares 555
Weighted Average Remaining Contractual Life (Years) 21 days
$4.25 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 4.25
Number of Warrants exercisable | shares 1,506,141
Weighted Average Remaining Contractual Life (Years) 4 years 3 months 10 days
$5.3125 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 5.3125
Number of Warrants exercisable | shares 264,706
Weighted Average Remaining Contractual Life (Years) 4 years 3 months 10 days
$5.00 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 5.00
Number of Warrants exercisable | shares 7,000,000
Weighted Average Remaining Contractual Life (Years) 4 years 3 months 25 days
$6.25 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 6.25
Number of Warrants exercisable | shares 1,050,000
Weighted Average Remaining Contractual Life (Years) 4 years 3 months 21 days
$0.001 [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 0.001
Number of Warrants exercisable | shares 950,000
Warrant [Member]  
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number of Warrants exercisable | shares 10,772,735
Weighted Average Remaining Contractual Life (Years) 4 years 3 months 21 days
Weighted average exercise price exercisable | $ / shares $ 4.59