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Property (Details Narrative) - USD ($)
3 Months Ended 9 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2020
Jan. 31, 2019
Property, Plant and Equipment [Abstract]        
Depreciation expense $ 2,098 $ 1,776 $ 6,622 $ 4,602