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STOCK OPTION COMPENSATION EXPENSE (Details) (USD $)
9 Months Ended
Jan. 31, 2015
Exercise price $ 1.20us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
Expected stock price volatility 131.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Risk-free rate of interest 1.10%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Expected term (years) 2 years 6 months