[gradsusr] Writing point model output data to a file

[Zilore Mumba]

I want to write data at all time steps to a file, i.e at a fixed
longitude and latitude for t=1 to t=9 for a 48 hour forecast run of
the WRF output, I want all 9 temperatures in a file at that location.
I wrote the following script

'open wrfout_d01_2018-12-02_00.ctl'
************************
'set lon 30.13'
   lons=sublin(result,2)
   xlon=subwrd(lons,4)
'set lat -1.97'
   lats=sublin(result,2)
   xlat=subwrd(lats,4)

 write('wrfout_t2.txt', 'Temp at Lon. 'xlon 'Lat. 'xlat)

count = 1
while (count <=3)
   'set t 'count
   'd t2'
   tmp=sublin(result,2)
   temp=subwrd(tmp,4)

*Save data to file
   write('wrfout_t2.txt', temp, append)
   count = count + 1
endwhile

The above script writes "Temp at Lon.  'Lat. " in the file "wrfout_t2"
as per the first write statement. Then there is no other entry in the
file, but an error on the terminal "unknown command 0". This error is
repeated 4 times
How do I go about achieving what an trying to do?