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4. ACCOUNTS RECEIVABLE
12 Months Ended
Oct. 31, 2016
Receivables [Abstract]  
4. ACCOUNTS RECEIVABLE

The activity in the allowance for doubtful accounts for the years ended October 31, 2016 and 2015 is as follows:

 

    2016     2015  
Balance, beginning of year   $ 306,140     $ 273,346  
Provision     273,822       270,421  
Write-offs     (311,251 )     (237,627 )
Balance, end of year   $ 268,711     $ 306,140