Help with script

[ghost]

Hi, I'm new to shell and I have an issue with setting the pathway for SAMSA to location of samsa2 GitHub download, The location should be set with the lines:

1. IGNORE_DEPS=1 (which doesn't return any errors)
2. if [[ -d "${BASH_SOURCE%/}/../bash_scripts/lib/common.sh" ]]; then source "${BASH_SOURCE%/}/../bash_scripts/lib/common.sh"else ("bash package_installation.bash") source "../bash_scripts/lib/common.sh" fi

I entered these lines:
$ if [[ -d "${BASH_SOURCE%/}/C:/Users/maria/samsa2/bash_scripts/lib/common.sh" ]]; then source "${BASH_SOURCE%/}/C:/Users/maria/samsa2/bash_scripts/lib/common.sh" else source "C:/Users/maria/samsa2/bash_scripts/lib/common.sh" fi

Maria is username in this case.
However, when I enter the lines from the second point, shell 'freezes' and the command is not executed.
Any help would be much appreciated