Annual report pursuant to Section 13 and 15(d)

5. STOCK OPTIONS AND WARRANTS (Details - Warrant activity)

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5. STOCK OPTIONS AND WARRANTS (Details - Warrant activity) - $ / shares
12 Months Ended
Apr. 30, 2018
Apr. 30, 2017
Warrants exercisable 33,993,104  
Warrants [Member]    
Warrants outstanding, beginning balance 67,853,504 84,969,908
Warrants issued 4,500,000 1,638,796
Warrants exercised (38,360,400)  
Warrants expired 33,993,104 (18,755,200)
Warrants outstanding, ending balance 33,993,104 67,853,504
Warrants exercisable 67,853,504  
Weighted average exercise price warrants outstanding, beginning balance $ 0.13 $ 0.16
Weighted average exercise price warrants issued 0.00 0.00
Weighted average exercise price warrants exercised 0.00 0.00
Weighted average exercise price warrants outstanding, ending balance 0.00 $ 0.13
Weighted average exercise price warrants exercisable $ 0.10