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v3.22.2

Operating leases (Details) | 12 Months Ended
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Apr. 30, 2022 USD ($)
Operating Lease, Expense | $ 254,906
Operating Lease Location 1 [Member] |
Operating Lease, Expense | 22,000
Operating Lease Location 2 [Member] |
Operating Lease, Expense | 4,692
Operating Lease Location 3 [Member] |
Operating Lease, Expense | 2,226
Operating Lease Location 4 [Member] |
Operating Lease, Expense | 2,667
Operating Lease Location 5 [Member] |
Operating Lease, Expense | $ 1,690

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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
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