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6. STOCK OPTIONS AND WARRANTS (Details - Warrant activity) - Warrants [Member] - $ / shares | 12 Months Ended
--- | ---
Apr. 30, 2020 | Apr. 30, 2019
Warrants outstanding, beginning balance | 42,077,797 | 33,993,104
Warrants issued | 16,666,666 | 8,084,693
Warrants expired | (10,854,308) | 0
Warrants outstanding, ending balance | 47,890,155 | 42,077,797
Warrants exercisable | 47,890,155 |
Weighted average exercise price warrants outstanding, beginning balance | $ 0.09 | $ 0.1
Weighted average exercise price warrants issued |  |
Weighted average exercise price warrants Expired |  |
Weighted average exercise price warrants outstanding, ending balance |  | $ 0.09
Weighted average exercise price warrants exercisable | $ 0.05 |

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- Definition Weighted average exercise price warrants exercisable + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition Number of warrants or rights outstanding. + References No definition available. + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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