loops - Windows Batch counter with follow '0' -

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hi working on small batch files makes rename files in directory, far loop working make 0 infront of counter result this:

setlocal enabledelayedexpansion  set /a counter=0  %%a in (*.txt) (     set /a counter+=1      copy "%%a" "directory/%%a.!counter!.txt"     )

this outputs as:

     tvscriptmonday.txt => tvscriptmonday.1.txt     tvscripttuesday.txt => tvscripttuesday.2.txt

but have output:

    tvscriptmonday.01.txt     tvscripttuesday.02.txt

i tried using if command:

if !counter! <9 set counter=0!counter!

but somehow not work, ideas anyone?

using little trick:

setlocal enabledelayedexpansion  set /a counter=100  %%a in (*.txt) (     set /a counter+=1      copy "%%a" "directory/%%a.!counter:~-2!.txt" )

the :~-2 takes last 2 chars counter only.

expandable: example, if need 4 number scheme, start counting 10000 , extract last 4 chars :~-4

Brazzel