How to edit e-mail settings for project issue content type I am using the project and the project issue module on a Drupal 7 instance and ran into some trouble with the notification settings.

Apparently, the poject issue module saves for every content type a variable which contains information which e-mail sender address should be used for e-mail notifications on new issues etc.
The variable is named project_issue_reply_to_NAME_OF_CONTENT_TYPE. 
How can I change this value for an existing content type?

As the variable is of type blob I can't change the value easily in the database.
suggestion 1 : 

drush vset project_issue_reply_to_NAME_OF_CONTENT_TYPE test@example.com

suggestion 2 :

in a custom hook_update_N() :
variable_set('project_issue_reply_to_NAME_OF_CONTENT_TYPE', 'test@example.com');