8. WARRANTS (Details Narrative)	3 Months Ended	9 Months Ended
	Jan. 31, 2018 $ / shares shares	Jan. 31, 2018 $ / shares shares
Warrants and Rights Note Disclosure [Abstract]
Warrants issued	0	0
Warrants exercised	0	0
Warrants outstanding	39,040	39,040
Warrant exercise price | $ / shares	$ 17.29	$ 17.29
Warrants exercisable expiration date		Aug. 30, 2018