Quarterly report [Sections 13 or 15(d)]

FAIR VALUE MEASUREMENTS (Details - Changes in fair value of derivative liability)

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FAIR VALUE MEASUREMENTS (Details - Changes in fair value of derivative liability) - USD ($)
3 Months Ended 6 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Oct. 31, 2025
Oct. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Change in fair value $ (10,474,000) $ 1,829,000 $ (10,231,000) $ 3,913,000
Fair Value, Recurring [Member] | Derivative Liability [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Fair value, beginning 0   0  
Issuance of Series C convertible preferred stock 1,995,000   1,995,000  
Change in fair value (302,000)   (302,000)  
Fair value, ending $ 1,693,000   $ 1,693,000