Quarterly report pursuant to Section 13 or 15(d)

3. SIGNIFICANT ACCOUNTING POLICIES (Details)

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3. SIGNIFICANT ACCOUNTING POLICIES (Details) - shares
3 Months Ended 9 Months Ended
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2016
Jan. 31, 2015
Shares excluded from calculation of fully diluted earnings per share 153,021,924 82,971,923 153,021,924 82,971,923
Options [Member]        
Shares excluded from calculation of fully diluted earnings per share 68,050,000 25,000,000 68,050,000 25,000,000
Warrants [Member]        
Shares excluded from calculation of fully diluted earnings per share 84,969,908 57,969,908 84,969,908 57,969,908