How to add in extra value for search in Server side the Angular way?

vinsee

I have a server-side listing using Angular 9 follow the steps from https://l-lin.github.io/angular-datatables/#/advanced/custom-range-search which is working perfectly. I want to add in extra value in search column before triggering the API. How can I do that? Please help, thanks.

Sample structure: <ExtraValue><StaticSeparator><UserInputValue>
Sample when pass to API: search: {value: "OPEN|mySearchValue", regex: false}