Derivative Liabilities (Details Narrative) - USD ($)		3 Months Ended		6 Months Ended
	Sep. 25, 2017	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018	Oct. 10, 2017	Nov. 30, 2015	Oct. 31, 2015
Issuance of share of common stock					158,342
Change in fair value of warrant liability					$ 459,000
2015 Private Placement Financing [Member]
Number of warrants issued							20,376,219	20,376,219
Number of warrants to purchase common stock	1,599,135					268,909
Number of warrants exercise during the period	118,057
Issuance of share of common stock	63,811