NOTE 12 - CONCENTRATIONS AND CREDIT RISK: Schedule of Customer Concentrations (Details)	3 Months Ended		9 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Details
Customer A	34.30%	19.10%	30.60%	20.60%
Customer B	11.40%	0.00%	0.00%	0.00%
Customer C	10.70%	0.00%	0.00%	0.00%