CAPITAL STOCK (Details 3) - $ / shares	9 Months Ended	12 Months Ended
	Apr. 30, 2017	Jul. 31, 2016
Weighted Average Remaining Contractual Term (Years)	2 years 3 months 14 days
Warrant [Member]
Number of Warrants, Beginning Balance	13,953,872
Number of Warrants, Issued	9,571,929
Number of Warrants, Exercised	(1,620,670)
Number of Warrants, Expired	(1,859,524)
Number of Warrants, Ending Balance	20,045,607	13,953,872
Weighted Average Exercise Price, Beginning Balance	$ 1.65
Weighted Average Exercise Price, Issued	2.00
Weighted Average Exercise Price, Exercised	1.20
Weighted Average Exercise Price, Expired	2.60
Weighted Average Exercise Price, Ending Balance	$ 1.77
Weighted Average Remaining Contractual Term (Years)		2 years 3 months 22 days
Weighted Average Remaining Contractual Term (Years), Issued	2 years 8 months 19 days