Quarterly report pursuant to Section 13 or 15(d)

6. STOCK OPTIONS AND WARRANTS (Details - Option Assumptions)

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6. STOCK OPTIONS AND WARRANTS (Details - Option Assumptions) - Options [Member]
6 Months Ended
Oct. 31, 2016
Oct. 31, 2015
Risk-free interest rate 1.31%
Expected volatility 105.00%
Expected lives (years) 5 years  
Expected dividend yield 0.00%