Dear Alexander,
I think my explanation was not proper enough.
We need to pre-populate certain values from work order to the schedule assistant filter
Please find the screenshots

When I click on the book button from work order ,the values(project and property) should pre-populate to the schedule assistant filters.
Can you please advise how can achieve this using Retrieve Constraints Query
Please find the screen shots below were the resource type value(contact) from the resource requirement is
pre-populated to schedule assistant filter(Resource Types)

Like this When I click on the book button from work order ,the values(project and property) should pre-populate to the schedule assistant filters(Project, Property).
Thank you for your time and consideration.
Thanks and Regards.