Quarterly report pursuant to Section 13 or 15(d)

STOCK OPTIONS AND WARRANTS (Details - Warrants by exercise price)

STOCK OPTIONS AND WARRANTS (Details - Warrants by exercise price)	6 Months Ended
	Oct. 31, 2021 $ / shares shares
$97.50 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 97.50
Number of Warrants exercisable \| shares	513
Weighted Average Remaining Contractual Life (Years)	1 month 17 days
$86.25 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 86.25
Number of Warrants exercisable \| shares	580
Weighted Average Remaining Contractual Life (Years)	5 months 1 day
$37.50 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 37.50
Number of Warrants exercisable \| shares	1,333
Weighted Average Remaining Contractual Life (Years)	8 months 23 days
$45.00 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 45.00
Number of Warrants exercisable \| shares	555
Weighted Average Remaining Contractual Life (Years)	6 months 21 days
$4.2500 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 4.2500
Number of Warrants exercisable \| shares	1,506,141
Weighted Average Remaining Contractual Life (Years)	4 years 9 months 10 days
$5.3125 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 5.3125
Number of Warrants exercisable \| shares	264,706
Weighted Average Remaining Contractual Life (Years)	4 years 9 months 10 days
$5.0000 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 5.0000
Number of Warrants exercisable \| shares	7,000,000
Weighted Average Remaining Contractual Life (Years)	4 years 9 months 25 days
$6.2500 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 6.2500
Number of Warrants exercisable \| shares	1,050,000
Weighted Average Remaining Contractual Life (Years)	4 years 9 months 18 days
Warrant 9 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights \| $ / shares	$ 0.0010
Number of Warrants exercisable \| shares	950,000
Warrant [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of Warrants exercisable \| shares	10,773,828
Weighted Average Remaining Contractual Life (Years)	4 years 9 months 21 days
Weighted average exercise price exercisable \| $ / shares	$ 4.60