I import variables from another config.txt file following content:

param1 = %LOCALAPPDATA%Programs
param2 = %LOCALAPPDATA%ProgramsMyfolder
and my bat file following:

for /f "delims=" %%L in (config.txt) do set %%L
echo %param1%

--Output
%LOCALAPPDATA%Programs
but i want my Output following:
C:UsersAlaskaAppDataLocalPrograms