Quarterly report pursuant to Section 13 or 15(d)

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

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7. STOCK OPTIONS AND WARRANTS (Details - Warrant activity) - Warrants [Member]
6 Months Ended
Oct. 31, 2017
$ / shares
shares
Warrants outstanding, beginning balance | shares 67,853,504
Warrants issued | shares 2,833,333
Warrants expired | shares (17,614,400)
Warrants outstanding, ending balance | shares 53,072,437
Warrants exercisable | shares 53,072,437
Weighted average exercise price warrants outstanding, beginning balance | $ / shares $ .13
Weighted average exercise price warrants issued | $ / shares 0.03
Weighted average exercise price warrants expired | $ / shares
Weighted average exercise price warrants outstanding, ending balance | $ / shares .12
Weighted average exercise price warrants exercisable | $ / shares $ 0.12