I’m not sure what you want to do, but to put the spaces at the end of the line try this:
xlt_filter {-e-37{+ }}
But I recomend using TCL to do that directly…
if using a tclproc:
set variable “$variable “
or
append variable $spaces
or
append variable [string repeat ” ” 37]
If in a xlate, enter in the preproc the following line:
set xlateOutVals [append xlateInVals [string repeat ” ” 37]]
but remember that xlateInVals is a list, so to play safe you may want to force the lindex 0.