NOTE 12 - CONCENTRATIONS AND CREDIT RISK: Schedule of Vendor Concentrations (Details)	3 Months Ended		9 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Details
Supplier A	0.00%	20.50%	10.90%	30.00%
Supplier B	15.50%	31.10%	17.00%	14.00%
Supplier C	0.00%	0.00%	10.60%	0.00%
Supplier D	0.00%	10.20%	0.00%	0.00%
Supplier E	40.70%	0.00%	27.70%	0.00%
Supplier F	12.10%	0.00%	0.00%	0.00%