absolute value in table

[MaiMollare]

good day to all and well returned from the holidays
I still use the wildfire relase 3 and I am trying to insert in a table table table table in a parametric way of the values linked to the features of the model for example &d1043 but rightly I find a negative value.
I wanted to ask you if you can enter only the absolute value in the table, keeping obviously the parametric link.
Thank you very much:

 

[AMinati]

you can do it using relationships

aminati

 

[MaiMollare]

Hi aminati
you can be more explicit please what kind of relationship should I put in table