5. STOCKHOLDERS EQUITY (Details - Preferred stock issuances) - Series E Preferred Stock [Member] - USD ($)	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2014
June 13, 2014 Financing [Member]
Number of preferred stock shares issued	2,676	799,764
Gross proceeds raised	$ 60,000	$ 19,205,000
February 11, 2014 Offering [Member]
Number of preferred stock shares issued			775,000
Gross proceeds raised			$ 19,375,000