Display a date in the future, based on on a variable input

Hello
Is it possible to write a formula/equation/macro that displays a date in the future, based on a variable date from a Plugin?

We are taking a test date ${Asset:TestDate} (which comes via a plugin from the Simpro system) and I want to display a date 6 months in the future from the Asset Test Date.

Is it possible to achieve this in OnlyOffice?
many thanks

Hello @Stephenson
Could you please provide us with step-by-step desired scenario?
You can make scrrenshots or draw a scheme.
Do I understand right that you have your own plugin for editor which receives some data from outside (third-party sources) and you want to pass that data (date stamp) to the editor?