"What is the problem????"

Scoping. $sqi is defined in an if statement (within a for loop), and you expect to use it outside of this. See your previous question usage of "my" keyword. use strict; would have caught this, among other problems:

Global symbol "$sqi" requires explicit package name at mongodb.pl line
+ 42.

[download]

Also Coping with Scoping.

Update: slight rewording

In reply to Re: Problem with inserting data into MongoDB by marto
in thread Problem with inserting data into MongoDB by ravi45722

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