CAPITAL STOCK AND ADDITIONAL PAID-IN CAPITAL - Share-based Payment Arrangement, Option, Activity (Details) - $ / shares	9 Months Ended	12 Months Ended
	Apr. 30, 2022	Jul. 31, 2021
Number of Options
Beginning Balance	2,233,500	1,005,000
Options granted	805,000	1,338,500
Options expired		(110,000)
Ending Balance	3,038,500	2,233,500
Weighted Average Exercise Price
Beginning Balance	$ 1.09	$ 1
Options granted	0.82	1.2
Options expired		1.5
Ending Balance	$ 1.02	$ 1.09