SHARE CAPITAL AND SHAREBASED PAYMENTS (Details 3) - $ / shares	12 Months Ended
Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Weighted average assumptions:
Risk-free interest rate	2.13%	2.12%	1.42%
Expected dividend yield	0.00%	0.00%	0.00%
Expected option life (years)	5 years	5 years	4 years 11 months 15 days
Expected stock price volatility	89.70%	112.34%	129.96%
Forfeiture rate	0.00%	0.00%	0.00%
Weighted average fair value at grant date	$ 0.27	$ 0.31	$ 0.32

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- References

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- Definition

The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2019-01-01
-Paragraph 47
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_a_i&doctype=Standard
-URIDate 2019-03-27

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The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

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- Definition

The percentage of an expected dividend used to calculate the fair value of share options granted.

+ References

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