How to get a Git-Bash into MEGIT

Hi,

i would like to have a Git-Bash inside MEGIT but i do not know how to do.

I already tried via "External Tools" in MEGIT which works except the fact that i can not start gist-bash.exe using the right working directory.
I works with a Argument : --cd=C:\HOME\Development\MyProjects\laravel\TrustAPI_Test

For example : C:\HOME\Development\Git\git-bash.exe --cd=C:\HOME\Development\MyProjects\laravel\TrustAPI_Test => This works , but is very static

The problem is, that i can not use the MEGIT variable "$(get_dir) because it looks like the variable is always empty.

C:\HOME\Development\Git\git-bash.exe --cd=${git_dir} => This does not work

For example in SourceGit they solve it the same way but their variable ${REPO} does the job.

In my opinion the problem is, that the varibles in MEGIT are empty.

Any ideas are welcome.

Brgds Dietmar