Quarterly report [Sections 13 or 15(d)]

FAIR VALUE MEASUREMENTS (Details - Changes in fair value)

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FAIR VALUE MEASUREMENTS (Details - Changes in fair value) - USD ($)
3 Months Ended
Jul. 31, 2025
Jul. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Change in fair value of warrant liability $ 243,000 $ 2,084,000
Fair Value, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value of the warrant liability at beginning 338,000  
Issuance of warrants 363,000  
Change in fair value of warrant liability (243,000)  
Fair value of the warrant liability at ending $ 458,000