Receiver interfaces condition

Hello All,

In PI 7.31, I am trying to insert 1 receiver interfaces condition to check if the source field is not empty, then do not execute the interface

I have given the condition as ns0:Material_MT/row/flag # (not equal) and right operand is blank and checked multiline checkbox

In my case, the source structure is 0..unbounded where I use a select statement to fetch mutiple records (row)

So the structure is like this below

<MT_Material>

<row> 0..unbounded

<matid>

<flag>

</row>

</MT_Material>

The condition is not working so I am assuming its wrong. And also since the source structure is 0..unbounded, how do I specify the condition ?

is the multline will take care of 0..many?

thx

mike