Equity Compensation Plans (Details - Fair value assumptions for options) - Equity Option [Member]	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Risk-free interest rate	0.86%	0.32%
Expected life (in years)	4 years 4 months 13 days	4 years 8 months 8 days
Expected volatility	68.64%	81.42%
Expected dividend yield	0.00%	0.00%