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PROPERTY AND EQUIPMENT, NET (Tables)
12 Months Ended
May 31, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]

2021

2020

Equipment

 

$

1,849,888

 

$

1,921,833

Furniture, fixtures and leasehold improvements

432,989

225,189

Less accumulated depreciation

 

 

(1,972,357)

 

 

(1,867,643)

Net property and equipment

$

310,520

$

279,379