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STOCK BASED COMPENSATION (Details Narrative) - USD ($) |  |  |  |  | 3 Months Ended
--- | --- | --- | --- | --- | ---
Nov. 16, 2021 | Nov. 02, 2021 | Jun. 01, 2021 | Oct. 30, 2020 | Jan. 31, 2022 | Jan. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock options exercised |  |  |  |  |  | $ 104,000
Common Stock [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock options exercised, shares |  |  |  |  |  | 30,000
Stock options exercised |  |  |  |  |  |
Warrant [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  | 5 months |  | 5 months |  |
Class of warrant or right, date from which warrants or rights exercisable |  | Oct. 30, 2026 |  | Oct. 30, 2025 |  |
Warrants purchase of common stock |  | 60,000 |  | 60,000 |  |
Warrant exercise price |  | $ 4.77 |  | $ 2.06 | $ 6.56 |
Consulting expense | $ 25,484 |  |  |  | $ 110,000 | $ 57,000
Warrants to purchase common stock |  |  |  |  | 300,000 |
Warrants maturity date |  |  |  |  | Mar. 22, 2026 |
2018 Share Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares options, granted |  |  |  |  | 30,000 | 1,130,000
Share-based compensation arrangements by share-based payment award, options, exercises in period, weighted average exercise price |  |  |  |  |  | $ 3.78
Stock options exercised, shares |  |  |  |  |  | 23,880
Number of shares available for future grants |  |  |  |  | 2,000,000 |
Employee Stock Purchase Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Purchase price of common stock percentage |  |  |  |  | 85.00% |
Equity Option [Member] | 2018 Share Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares options, granted |  |  | 2,000,000 |  |  |
Equity Option [Member] | 2018 Share Plan [Member] | Common Stock [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares options, granted |  |  | 100,000 |  |  |
Non Vested Stock Option [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock-based compensation |  |  |  |  | $ 1,405,000 | $ 0
Stock Option Activity [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Option to purchase common stock |  |  |  |  | 100,000 | 100,000
Shares withheld on a cashless exercise |  |  |  |  | 53,091 | 53,091
Stock options exercised, shares |  |  |  |  | 29,880 | 29,880
Stock options exercised |  |  |  |  | $ 0 | $ 104,000
Minimum [Member] | Equity Option [Member] | 2018 Share Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation arrangements by share-based payment award, options, exercises in period, weighted average exercise price |  |  | $ 5.00 |  |  |
Maximum [Member] | Equity Option [Member] | 2018 Share Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation arrangements by share-based payment award, options, exercises in period, weighted average exercise price |  |  | $ 8.00 |  |  |
Employees and Directors [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock-based compensation |  |  |  |  | $ 730,000 | 875,000
Employees and Directors [Member] | Minimum [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  |  | 1 year |
Employees and Directors [Member] | Maximum [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  |  | 4 years |
Consultants [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Options granted |  |  |  |  | $ 109,000 | $ 54,000
Employees and Consultants [Member] | 2018 Share Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Shares options, granted |  |  |  |  | 30,000 | 1,130,000
Employees and Consultants [Member] | Minimum [Member] | 2018 Share Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Exercise price |  |  |  |  | $ 2.83 |
Employees and Consultants [Member] | Maximum [Member] | 2018 Share Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Exercise price |  |  |  |  | $ 3.24 |
Employees [Member] | Employee Stock Purchase Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Option to purchase common stock |  |  |  |  | 0 | 0

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