[Users] problem with exec_dset

[openser user]

hi all,
     i am trying to send $tU in exec_dset function. my function look like this
  exec_dset("fwdnoanswer1.sh '$tU'");
  in this function my script fwdnoanswer1.sh will take $tU as an input and check my database to get the forward number and it has to dail out to fwd number.
   when i runned script manually it was giving proper result. but when i used this script in exec_dset i am not getting fwd number.
   
  can any one please help me how to use this exec_dset() function. according to me the script is not taking that value $tU.
   
  with regards
  openseruser

				
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