how to increase the length of selection text

hi All,

I have a requirement where the select option text is longer then the usual size.

I tried to use the selection screen comment but it is not coming in the same line.

Kindly suggest on this.

Select-options:s_st_obj FOR hrp1001-objid NO INTERVALS

here s_st_obj text is Object ( PERNR / Position id / Org.id)