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Posted: **07 Oct 2013 04:46**

Hello,

I try insert a variable into an another variable
I tried this:

@echo off
set fullstr=asdfghjkl
set /a offset=3
set /a chcount=5
rem set substr=%fullstr:~3,5%
set substr=%fullstr:~%offset%,%chcount%% <- this does't work :-(
echo %substr%

How can I insert the variable into an another variable?
Any idea?

thanks in advance, pumi

Posted: **07 Oct 2013 05:24**

Hello, i am not sure and didn't tested this but i think it should work this way:

set substr=%fullstr:~%%offset%,%chcount%

Posted: **07 Oct 2013 05:36**

You need two expansion phases here.

First for the numbers and then for the main variable expansion.

There are multiple ways to solve it, here is one

Code: Select all

setlocal enableDelayedExpansion
set /a offset=3
set /a chcount=5
rem set substr=%fullstr:~3,5%
set substr=!fullstr:~%offset%,%chcount%!

Posted: **07 Oct 2013 07:04**

thanks for your help, it works!

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insert variable into onother variable

insert variable into onother variable

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