How to configure

Go to the Administration page, choose Custom Fields link and add an KCF - Single Autocomplete.

In order to see how you can configure all the options above, check this: Configuration

This custom field can be used for many types of options: 

If you go to an issue and try to edit this field, you will see an image like this: 

Save the changes and the selected value should appear on the issue screen: 

Example for data source

 Get Issues 

string [] issues = selectIssues("created < now()");
string [] res;
for (string iss in issues) {
    if (contains(iss.summary, argv["query"])) {
    res = addElementIfNotExist(res, iss);
    }
}
return res;

This example is used to generate the pictures above. It gets all the created issues with the summary matching the search.