Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
6. STOCK OPTIONS AND WARRANTS (Details - Options by exercise price) - $ / shares
6 Months Ended
Oct. 31, 2020
Apr. 30, 2020
Options [Member]    
Number of Options 69,200,000 67,200,000
Weighted Average Remaining Contractual LIfe (years) 1 year 3 months 26 days  
Weighted Average Exercisable Price $ 0.06 $ 0.06
Numer of Options Exercisable 67,700,000  
$0.063 [Member]    
Number of Options 15,600,000  
Weighted Average Remaining Contractual LIfe (years) 1 month 6 days  
Weighted Average Exercisable Price $ 15,600,000  
Numer of Options Exercisable 0.063  
$0.104 [Member]    
Number of Options 10,450,000  
Weighted Average Remaining Contractual LIfe (years) 10 months 14 days  
Weighted Average Exercisable Price $ 10,450,000  
Numer of Options Exercisable 0.104  
$0.0685 [Member]    
Number of Options 600,000  
Weighted Average Remaining Contractual LIfe (years) 6 months  
Weighted Average Exercisable Price $ 600,000  
Numer of Options Exercisable 0.0685  
$0.058 [Member]    
Number of Options 2,450,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 2 months 27 days  
Weighted Average Exercisable Price $ 2,450,000  
Numer of Options Exercisable 0.058  
$0.0734 [Member]    
Number of Options 1,200,000  
Weighted Average Remaining Contractual LIfe (years) 10 months 3 days  
Weighted Average Exercisable Price $ 1,200,000  
Numer of Options Exercisable 0.0734  
$0.0729 [Member]    
Number of Options 1,800,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 8 months 9 days  
Weighted Average Exercisable Price $ 1,800,000  
Numer of Options Exercisable 0.0729  
$0.089 [Member]    
Number of Options 1,200,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 8 months 16 days  
Weighted Average Exercisable Price $ 1,200,000  
Numer of Options Exercisable 0.089  
$0.0553 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 11 months 19 days  
Weighted Average Exercisable Price $ 500,000  
Numer of Options Exercisable 0.0553  
$0.0558 [Member]    
Number of Options 9,000,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 3 months 19 days  
Weighted Average Exercisable Price $ 9,000,000  
Numer of Options Exercisable 0.0558  
$0.0534 [Member]    
Number of Options 1,200,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 10 months 6 days  
Weighted Average Exercisable Price $ 1,200,000  
Numer of Options Exercisable 0.0534  
$0.0539 [Member]    
Number of Options 1,000,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 2 months 30 days  
Weighted Average Exercisable Price $ 1,000,000  
Numer of Options Exercisable 0.0539  
$0.0683 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 3 months 29 days  
Weighted Average Exercisable Price $ 500,000  
Numer of Options Exercisable 0.0683  
$0.0649 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 5 months 20 days  
Weighted Average Exercisable Price $ 500,000  
Numer of Options Exercisable 0.0649  
$0.0495 [Member]    
Number of Options 9,000,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 11 days  
Weighted Average Exercisable Price $ 9,000,000  
Numer of Options Exercisable 0.0495  
$0.038 [Member]    
Number of Options 1,200,000  
Weighted Average Remaining Contractual LIfe (years) 3 years 10 months 25 days  
Weighted Average Exercisable Price $ 1,200,000  
Numer of Options Exercisable 0.038  
$0.0404 [Member]    
Number of Options 1,000,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 9 months  
Weighted Average Exercisable Price $ 1,000,000  
Numer of Options Exercisable 0.0404  
$0.037 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 9 months 29 days  
Weighted Average Exercisable Price $ 500,000  
Numer of Options Exercisable 0.037  
$0.034 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 11 months 19 days  
Weighted Average Exercisable Price $ 500,000  
Numer of Options Exercisable 0.034  
$0.0408 [Member]    
Number of Options 9,000,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 6 months 3 days  
Weighted Average Exercisable Price $ 7,500,000  
Numer of Options Exercisable 0.0408  
$0.0240 [Member]    
Number of Options 1,000,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 2 months 30 days  
Weighted Average Exercisable Price $ 1,000,000  
Numer of Options Exercisable 0.024  
$0.0247 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 3 months 29 days  
Weighted Average Exercisable Price $ 500,000  
Numer of Options Exercisable 0.0247  
$0.0105 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 5 months 20 days  
Weighted Average Exercisable Price $ 500,000  
Numer of Options Exercisable 0.0105