FAIR VALUE MEASUREMENTS (Details) - Hierarchy for financial liabilities measured at fair value	Apr. 30, 2020 USD ($)
FAIR VALUE MEASUREMENTS (Details) - Hierarchy for financial liabilities measured at fair value [Line Items]
Operating lease liability	$ 81,712
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Recurring [Member]
FAIR VALUE MEASUREMENTS (Details) - Hierarchy for financial liabilities measured at fair value [Line Items]
Operating lease liability
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Recurring [Member]
FAIR VALUE MEASUREMENTS (Details) - Hierarchy for financial liabilities measured at fair value [Line Items]
Operating lease liability
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Recurring [Member]
FAIR VALUE MEASUREMENTS (Details) - Hierarchy for financial liabilities measured at fair value [Line Items]
Operating lease liability	$ 81,712