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CAPITAL STOCK (Details 1) - USD ($)
12 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Jul. 31, 2016
Gross Proceeds $ 604,209 $ 26,889,996 $ 10,209,632
Relative Fair Value Allocation to:      
Shares   19,421,351 8,365,037
Common Stock [Member]      
Relative Fair Value Allocation to:      
Shares   17,331 12,365
Equity Financing [Member] | 2017 Offering [Member]      
Total Fair Value Before Allocation to Net Proceeds   32,563,419  
Gross Proceeds   25,996,254  
Share Issuance Costs - Cash   (1,550,843)  
Net Cash Proceeds Received   24,445,411  
Relative Fair Value Allocation to:      
Shares   20,035,841  
Share Purchase Warrants   4,409,570  
Proceeds from Issuance or Sale of Equity   24,445,411  
Equity Financing [Member] | 2016 Offering [Member]      
Total Fair Value Before Allocation to Net Proceeds     11,954,405
Gross Proceeds     10,510,000
Share Issuance Costs - Cash     (525,483)
Net Cash Proceeds Received     9,984,517
Relative Fair Value Allocation to:      
Shares     8,365,037
Share Purchase Warrants     1,619,480
Proceeds from Issuance or Sale of Equity     9,984,517
Equity Financing [Member] | Common Stock [Member] | 2017 Offering [Member]      
Total Fair Value Before Allocation to Net Proceeds   26,689,487  
Equity Financing [Member] | Common Stock [Member] | 2016 Offering [Member]      
Total Fair Value Before Allocation to Net Proceeds     10,015,410
Equity Financing [Member] | Warrant [Member] | 2017 Offering [Member]      
Total Fair Value Before Allocation to Net Proceeds   $ 5,873,932  
Equity Financing [Member] | Warrant [Member] | 2016 Offering [Member]      
Total Fair Value Before Allocation to Net Proceeds     $ 1,938,995