SE16 Table fields changing

Hello guys,

I've been struggling with this lately. I made a macro to view certain things in the tables in SE16 and when i give the parameters to the table fields, it sometimes fails because the order of the fields changes. Please take a look at the picture attached to see what i am refering to.

As you can see, in one ocassion the field for "Vendor" dissapeared from the search criteria for the table, and just a matter of minutes later it is available again.

When my macro executes the line

session.findById("wnd[0]/usr/ctxtI1-LOW").Text

it does not always lands on the same field, because the first field keeps switching.

Is there a way in which i can prevent this from happening, or at least maybe set it myself to which fields i want to see?

Thank you beforehand for your support!