| 
 The
following table presents the hierarchy for our financial assets measured at fair value on a recurring basis as of January 31, 2022: 
SCHEDULE
OF FAIR VALUE MEASUREMENTS  
  
    |   | 
  | 
    Level
    1 | 
  | 
  | 
    Level
    2 | 
  | 
  | 
    Level
    3 | 
  | 
  | 
    Total | 
  | 
 
  
    |   | 
  | 
      | 
  | 
  | 
    (in thousands) | 
  | 
  | 
      | 
  | 
 
  
    | Money market funds: | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
  
    | Cash and cash
    equivalents | 
  | 
    $ | 
28,312 | 
  | 
  | 
    $ | 
- | 
  | 
  | 
    $ | 
- | 
  | 
  | 
    $ | 
28,312 | 
  | 
 
  
    | Certificates of deposit: | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
  
    | Cash and cash equivalents | 
  | 
      | 
1,000 | 
  | 
  | 
      | 
- | 
  | 
  | 
      | 
- | 
  | 
  | 
      | 
1,000 | 
  | 
 
  
    | Short-term investments | 
  | 
      | 
- | 
  | 
  | 
      | 
1,450 | 
  | 
  | 
      | 
- 
 | 
  | 
  | 
      | 
1,450 | 
  | 
 
  
    | U. S. treasury bills | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
  
    | Short-term
    investments | 
  | 
      | 
- | 
  | 
  | 
      | 
3,299 | 
  | 
  | 
      | 
- | 
  | 
  | 
      | 
3,299 | 
  | 
 
  
    | Total financial assets | 
  | 
    $ | 
29,312 | 
  | 
  | 
    $ | 
4,749 | 
  | 
  | 
    $ | 
- | 
  | 
  | 
    $ | 
34,061 | 
  | 
 
   
  
  
The
following table presents the hierarchy for our financial assets measured at fair value on a recurring basis as of October 31, 2021: 
  
  
    |   | 
  | 
    Level
    1 | 
  | 
  | 
    Level
    2 | 
  | 
  | 
    Level
    3 | 
  | 
  | 
    Total | 
  | 
 
  
    |   | 
  | 
      | 
  | 
  | 
    (in thousands) | 
  | 
  | 
      | 
  | 
 
  
    | Money market funds: | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
  
    | Cash and cash
    equivalents | 
  | 
    $ | 
28,949 | 
  | 
  | 
    $ | 
- | 
  | 
  | 
    $ | 
- | 
  | 
  | 
    $ | 
28,949 | 
  | 
 
  
    | Certificates of deposit: | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
 
  
    | Short term investments | 
  | 
      | 
- | 
  | 
  | 
      | 
2,000 | 
  | 
  | 
      | 
- 
 | 
  | 
  | 
      | 
2,000 | 
  | 
 
  
    | U. S. treasury bills | 
  | 
      | 
  | 
  | 
  | 
      | 
  | 
  | 
  | 
      | 
 | 
  | 
  | 
      | 
  | 
  | 
 
  
    | Short-term
    investments | 
  | 
      | 
- | 
  | 
  | 
      | 
4,599 | 
  | 
  | 
      | 
- | 
  | 
  | 
      | 
4,599 | 
  | 
 
  
    | Total financial assets | 
  | 
    $ | 
28,949 | 
  | 
  | 
    $ | 
6,599 | 
  | 
  | 
    $ | 
- | 
  | 
  | 
    $ | 
35,548 | 
  | 
 
   
 |