Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
5. STOCK OPTIONS AND WARRANTS (Details - Options by exercise price) - $ / shares
9 Months Ended
Jan. 31, 2020
Apr. 30, 2019
Options [Member]    
Number of Options 94,650,000 107,450,000
Weighted Average Remaining Contractual LIfe (years) 1 year 3 months 8 days  
Weighted Average Stock Price $ 0.08  
Numer of Options Exercisable 85,900,000  
Weighted Average Exercise Price $ 0.08  
$0.110 [Member]    
Number of Options 27,200,000  
Weighted Average Remaining Contractual LIfe (years) 22 days  
Weighted Average Stock Price $ 0.11  
Numer of Options Exercisable 27,200,000  
Weighted Average Exercise Price $ 0.11  
$0.184 [Member]    
Number of Options 250,000  
Weighted Average Remaining Contractual LIfe (years) 1 month 9 days  
Weighted Average Stock Price $ 0.184  
Numer of Options Exercisable 250,000  
Weighted Average Exercise Price $ 0.184  
$0.063 [Member]    
Number of Options 15,600,000  
Weighted Average Remaining Contractual LIfe (years) 6 months 18 days  
Weighted Average Stock Price $ 0.063  
Numer of Options Exercisable 15,600,000  
Weighted Average Exercise Price $ 0.063  
$0.104 [Member]    
Number of Options 10,450,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 4 months 6 days  
Weighted Average Stock Price $ 0.104  
Numer of Options Exercisable 10,450,000  
Weighted Average Exercise Price $ 0.104  
$0.0685 [Member]    
Number of Options 600,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 2 months 30 days  
Weighted Average Stock Price $ 0.0685  
Numer of Options Exercisable 600,000  
Weighted Average Exercise Price $ 0.0685  
$0.058 [Member]    
Number of Options 2,450,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 9 months 18 days  
Weighted Average Stock Price $ 0.058  
Numer of Options Exercisable 2,450,000  
Weighted Average Exercise Price $ 0.058  
$0.0734 [Member]    
Number of Options 1,200,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 2 months 30 days  
Weighted Average Stock Price $ 0.0734  
Numer of Options Exercisable 1,200,000  
Weighted Average Exercise Price $ 0.0734  
$0.0729 [Member]    
Number of Options 1,800,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 5 months 9 days  
Weighted Average Stock Price $ 0.0729  
Numer of Options Exercisable 1,800,000  
Weighted Average Exercise Price $ 0.0729  
$0.089 [Member]    
Number of Options 1,200,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 5 months 16 days  
Weighted Average Stock Price $ 0.089  
Numer of Options Exercisable 1,200,000  
Weighted Average Exercise Price $ 0.089  
$0.0553 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 4 months 6 days  
Weighted Average Stock Price $ 0.0553  
Numer of Options Exercisable 500,000  
Weighted Average Exercise Price $ 0.0553  
$0.0558 [Member]    
Number of Options 9,000,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 9 months  
Weighted Average Stock Price $ 0.0558  
Numer of Options Exercisable 9,000,000  
Weighted Average Exercise Price $ 0.0558  
$0.0534 [Member]    
Number of Options 1,200,000  
Weighted Average Remaining Contractual LIfe (years) 3 years 7 months 6 days  
Weighted Average Stock Price $ 0.0534  
Numer of Options Exercisable 1,200,000  
Weighted Average Exercise Price $ 0.0534  
$0.0539 [Member]    
Number of Options 1,000,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 7 months 13 days  
Weighted Average Stock Price $ 0.0539  
Numer of Options Exercisable 1,000,000  
Weighted Average Exercise Price $ 0.0539  
$0.0683 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 8 months 16 days  
Weighted Average Stock Price $ 0.0683  
Numer of Options Exercisable 500,000  
Weighted Average Exercise Price $ 0.0683  
$0.0649 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 1 year 10 months 6 days  
Weighted Average Stock Price $ 0.0649  
Numer of Options Exercisable 500,000  
Weighted Average Exercise Price $ 0.0649  
$0.0404 [Member]    
Number of Options 1,000,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 1 month 16 days  
Weighted Average Stock Price $ 0.0404  
Numer of Options Exercisable 1,000,000  
Weighted Average Exercise Price $ 0.0404  
$0.0370 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 2 months 16 days  
Weighted Average Stock Price $ 0.037  
Numer of Options Exercisable 500,000  
Weighted Average Exercise Price $ 0.037  
$0.0495 [Member]    
Number of Options 9,000,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 5 months 23 days  
Weighted Average Stock Price $ 0.0495  
Numer of Options Exercisable 9,000,000  
Weighted Average Exercise Price $ 0.0495  
$0.0380 [Member]    
Number of Options 1,200,000  
Weighted Average Remaining Contractual LIfe (years) 4 years 7 months 24 days  
Weighted Average Stock Price $ 0.038  
Numer of Options Exercisable 700,000  
Weighted Average Exercise Price $ 0.038  
$0.0340 [Member]    
Number of Options 500,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 4 months 6 days  
Weighted Average Stock Price $ 0.034  
Numer of Options Exercisable 500,000  
Weighted Average Exercise Price $ 0.034  
$0.0408 [Member]    
Number of Options 9,000,000  
Weighted Average Remaining Contractual LIfe (years) 2 years 11 months 15 days  
Weighted Average Stock Price $ 0.0408  
Numer of Options Exercisable 750,000  
Weighted Average Exercise Price $ 0.0408