STOCK OPTIONS, RESTRICTED STOCK UNITS (RSUs) AND WARRANTS - Stock options (Details) - $ / shares	9 Months Ended	12 Months Ended
	Jun. 30, 2023	Sep. 30, 2022
Exercise price	$ 3.90	$ 3.78
Number of options	8,555,560	8,174,563
Weighted average remaining life in years remaining life in years	7 years 4 months 28 days	7 years 5 months 1 day
Options exercisable number of options	6,772,308
Stock Options Exercise price 2.58
Exercise price	$ 2.58
Number of options	382,790
Weighted average remaining life in years remaining life in years	3 years 3 months 10 days
Options exercisable number of options	382,790
Stock Options Exercise price 1.98
Exercise price	$ 1.98
Number of options	1,472,892
Weighted average remaining life in years remaining life in years	5 years 4 months 2 days
Options exercisable number of options	1,472,891
Stock Options Exercise price 2.67
Exercise price	$ 2.67
Number of options	833,333
Weighted average remaining life in years remaining life in years	6 years 11 months 15 days
Options exercisable number of options	833,333
Stock Options Exercise price 3.30
Exercise price	$ 3.30
Number of options	2,586,725
Weighted average remaining life in years remaining life in years	7 years 4 months 13 days
Options exercisable number of options	2,140,227
Stock Options Exercise price 1.71
Exercise price	$ 1.71
Number of options	77,538
Weighted average remaining life in years remaining life in years	7 years 8 months 1 day
Options exercisable number of options	99,999
Stock Options Exercise price 8.52
Exercise price	$ 8.52
Number of options	83,333
Weighted average remaining life in years remaining life in years	7 years 9 months 29 days
Options exercisable number of options	83,333
Stock Options Exercise price 8.25
Exercise price	$ 8.25
Number of options	200,000
Weighted average remaining life in years remaining life in years	7 years 10 months 6 days
Options exercisable number of options	138,888
Stock Options Exercise Price 7.05
Exercise price	$ 7.05
Number of options	16,667
Weighted average remaining life in years remaining life in years	8 years 21 days
Options exercisable number of options	10,647
Stock Options Exercise price 7.20
Exercise price	$ 7.20
Number of options	16,667
Weighted average remaining life in years remaining life in years	8 years 29 days
Options exercisable number of options	10,647
Stock Options Exercise price 7.50
Exercise price	$ 7.50
Number of options	16,667
Weighted average remaining life in years remaining life in years	8 years 1 month 2 days
Options exercisable number of options	16,666
Stock Options Exercise price 6.90
Exercise price	$ 6.90
Number of options	278,727
Weighted average remaining life in years remaining life in years	8 years 3 months 7 days
Options exercisable number of options	200,607
Stock Options Exercise price 7.05
Exercise price	$ 7.05
Number of options	25,000
Weighted average remaining life in years remaining life in years	8 years 3 months 29 days
Options exercisable number of options	10,417
Stock Options exercise price 8.25
Exercise price	$ 8.25
Number of options	108,591
Weighted average remaining life in years remaining life in years	8 years 9 months 25 days
Stock Options Exercise price 7.74
Exercise price	$ 7.74
Number of options	45,000
Weighted average remaining life in years remaining life in years	8 years 10 months 17 days
Stock Options exercise price 7.05
Exercise price	$ 7.05
Number of options	8,333
Weighted average remaining life in years remaining life in years	9 years 14 days
Stock Options Exercise price 7.86
Exercise price	$ 7.86
Number of options	6,667
Weighted average remaining life in years remaining life in years	9 years 2 months 4 days
Stock Options Exercise price 4.95
Exercise price	$ 4.95
Number of options	1,922,990
Weighted average remaining life in years remaining life in years	9 years 2 months 26 days
Options exercisable number of options	1,232,935
Stock Options Exercise price 6.23
Exercise price	$ 6.23
Number of options	433,640
Weighted average remaining life in years remaining life in years	9 years 6 months 7 days
Options exercisable number of options	138,928
Stock Options Exercise price 5.24
Exercise price	$ 5.24
Number of options	40,000
Weighted average remaining life in years remaining life in years	9 years 9 months 29 days