JIRA Content Pack to allow additional parameters on search to only return specific JIRA projects or data

JIRA Content Pack to allow additional parameters on search to only return specific JIRA projects or data.
Currenlty when you choose to create a new dataset from a content pack for JIRA , you can only enter your main JIRA site and it automatically appends the rest api call for the search. However in our case we have multiple large projects so we only want to return data for a project or a set of projects. Can the interface be changed so that the dialog box with the URL is not read-only and that parameters can be appended to the rest api search URL so we only query for the projects that we want .
Example:https://rest/api/2/search
We want to add some JQL parameter on the end.
https://j/rest/api/2/search?jql=project=FW