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Equity (Details) - Schedule of Black-Scholes option pricing model
6 Months Ended
Jan. 31, 2022
Equity (Details) - Schedule of Black-Scholes option pricing model [Line Items]  
Expected dividend yield
Minimum [Member]  
Equity (Details) - Schedule of Black-Scholes option pricing model [Line Items]  
Risk-free interest rate 0.67%
Expected term (in years) 6 years 14 days
Expected volatility 75.00%
Maximum [Member]  
Equity (Details) - Schedule of Black-Scholes option pricing model [Line Items]  
Risk-free interest rate 1.70%
Expected term (in years) 6 years 1 month 9 days
Expected volatility 93.00%