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Financial Instruments (Narrative) (Details) - CAD ($)
12 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Apr. 30, 2022
Disclosure of detailed information about financial instruments [abstract]      
Cash and cash equivalents $ 37,548,304 $ 12,608,704 $ 30,482,269
Accounts payable and accrued liabilities $ 2,527,373    
Description of change of rates and materiality A 1% change in foreign exchange rate of CAD to MXN would increase/decrease the net and comprehensive loss for the year ended April 30, 2024    
Increase decrease comprehensive loss net $ 212,000 $ 139,000