v3.21.2

Warrants (Details) - $ / shares	12 Months Ended
Warrants (Details) - $ / shares	Apr. 30, 2021	Apr. 30, 2020
Beginning Balance, number of shares	11,550,000	11,550,000
Number of shares, granted
Number of shares, exercised
Ending Balance, number of shares	11,550,000	11,550,000
Beginning Balance, weighted average exercise price	$ 0.0485	$ 0.0485
Weighted average exercise price, granted	0.00	0.00
Weighted average exercise price, Exercised	0.0340	0.00
Ending Balance, weighted average exercise price	$ 0.0485	$ 0.0485
Warrant [Member]
Beginning Balance, number of shares	21,166,208	26,582,579
Number of shares, granted
Number of shares, exercised		5,416,551
Ending Balance, number of shares	21,166,208	21,166,208
Beginning Balance, weighted average exercise price	$ 0.026	$ 0.025
Weighted average exercise price, granted	0.000	0.00
Weighted average exercise price, Exercised	0.000	0.025
Ending Balance, weighted average exercise price	$ 0.026	$ 0.026

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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