Variable substitution in custom plugin not working

[Ish Abbi]

Hi everyone,

For custom build plugins in Jenkins, do we have the option to use variable substitutions?

I recently extended a Jenkins plugin to allow sending slack notifications as well.

I'm trying to send the string parameter's value as the value to the plugin's parameter. In some cases I'm always ending with the "${slackChannel}" being passed as a value instead of the variable substitution.

Any ideas or pointers of what could I be doing wrong here?

Thanks,

Ish