CAPITAL STOCK AND ADDITIONAL PAID-IN-CAPITAL (Details 2) - $ / shares	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Stock Option [Member]
Number of Options/Warrants
Beginning Balance	1,451,014	1,161,014
Options granted	826,284	290,000
Options expired	(175,000)
Options forfeited	(1,097,298)
Ending Balance	1,005,000	1,451,014
Weighted Average Exercise Price
Beginning Balance	$ 1.54	$ 1.70
Options granted	0.68	1.00
Options expired/forfeited	1.25
Ending Balance	$ 1.13	$ 1.54
Warrant [Member]
Number of Options/Warrants
Beginning Balance	8,196,524	8,394,882
Options granted	5,677,869	3,278,030
Options expired	(1,402,393)	(3,476,388)
Ending Balance	12,472,000	8,196,524
Weighted Average Exercise Price
Beginning Balance	$ 1.57	$ 2.70
Options granted	1.00	1.20
Options expired/forfeited	2.50	4.00
Ending Balance	$ 1.27	$ 1.57