How to change default message from user relationships module? I am using User Relationships module. Its working fine. But I want to change a default message which get displayed on user site after getting request.

The message is like


  "John has requested to be your Friend. View your pending relationship requests to approve or decline." 


I want same message to be displayed as


  "John has requested to be your Friend. View your pending friend requests to approve or decline." 


Just want to replace the word relationship with friend. How can I do that?
User Relationship module allows you to set your own message, you can override the default message by settting a variable using variable_set("user_relationships_msg_{$key}", "Custom Message"), check the functions user_relationships_get_message() and _user_relationships_default_messages().