Annual report pursuant to Section 13 and 15(d)

6. STOCK OPTIONS AND WARRANTS (Details - Option activity)

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6. STOCK OPTIONS AND WARRANTS (Details - Option activity) - Options [Member] - $ / shares
12 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Options Outstanding    
Beginning balance 44,800 71,634
Issued/Granted 7,333 8,133
Forfeited (10,800) (34,967)
Exercised 0 0
Ending balance 41,333 44,800
Exercisable 37,333  
Vested and expected to vest 41,333  
Weighted Average Exercise Price    
Beginning balance $ 94.36 $ 160.91
Issued 13.90 60.09
Forfeited 94.81 225.73
Exercised
Ending balance 79.97 94.36
Exercisable 87.46  
Vested and expected to vest 79.97  
Beginning balance 94.15 157.85
Issued 13.90 60.09
Forfeited 93.90 216.74
Ending balance $ 79.97 $ 94.15