Method 1: Change all properties
View or edit rulesets for your desired folder or the whole project
Click Search and Replace in top right corner of rules window
Add the fields "Search" and "Replace"
Note: These chagnes will affect all property sets and, so all properties may be changed as a result of this. Be cautios to not make the search to general so parts of other properties will be changed as well.
Method 2: Change one property
View or edit rulesets for your desired folder or the whole project
Stay in Common rules
In the "Rules" section, "Property" is the name of the property you want to change and "Regex" is what value the property can have
Change "Action" to "Replace"
Add the text string you want to change in "find value" and add the new desired value in "replace with"
These changes will only affect the property you selected in the "Rules" section.