[Solved] Change gaps in all underlines

[O_o]

Hello,

I've noticed that the gap is not well defined for a lot of sentence and I wanted to automate all my changes (There are more than 200 pages  ) I've got an idea for a "for loop" but... I can't find how can I change this gap parameter ? 

I've been there :
https://wiki.scribus.net/canvas/Beginners_Scripts

But did'nt found out 


thanks for your help !
 

---- EDIT -----

Just found that we could open a .sla with a text editor, I could replace :
TXTULP="50"
by
TXTULP="60"

in all the document, no need for a script.

Thanks and sorry for the disturb !