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Summary of Significant Accounting Policies (Tables)
9 Months Ended
Apr. 30, 2019
Accounting Policies [Abstract]  
Schedule of Financial Liabilities Measured at Fair Value on a Recurring Basis

The following table presents changes in Level 3 financial liabilities measured at fair value on a recurring basis:

 

    Level 3  
Fair value of promissory notes at July 31, 2018   $ 2,125,000  
Additions:     100,000  
Reductions:     2,225,000  
Changes in fair value     -  
Fair value at April 30, 2019   $ -