Modify Web Template Parameters Using API or Javascript

Hello Experts,
I am using the Web Application Designer (WAD) to build a template. We are on BW 7.01 (EHP1). I am trying to find a way to set a command within the template to change one of the parameters of the Web Template itself. I am very familar with how to use the SAP provided API Commands to change the Web ITEM parameters (like ANALYSIS item, CHART item, etc), but I do not see an API that will allow me to change the parameters of the Template itself.
For example, in WAD, on the left hand side, you can select the "Web Template" item and set the properties. For example:
Display Variable Screen [VARIABLE_SCREEN]
Reset Variable Values to Default [CLEAR_VARIABLES]
Show Personalized Variables [SHOW_PERSONALIZED_VARIABLES]
I would like to add a button to the template where I can allow the user to change some of these properties, but I don't see a way to do it. Does anyone have any experience coding this?
Thanks in advance for your help.
Jose

Hi ,
According to your description, my understanding is that you want to retrieve list item values related to a specific version using JavaScript.
We can also see the a specific version via the url …/_layouts/15/Versions.aspx?list=GUID….
We can use the SharePoint List web service that exposes
Lists.GetVersionCollection Method to return version information for the specified field in a SharePoint list.
There are some similar posts for your reference:
https://social.msdn.microsoft.com/Forums/en-US/02d29ce7-1a2b-4e91-9319-6dd43cde0bee/getting-the-version-history-of-a-list-item?forum=sharepointdevelopment
https://social.technet.microsoft.com/Forums/systemcenter/en-US/4bd80e0e-a605-4c5e-b534-a189c346b978/csom-fetching-list-item-version-history-programmatically?forum=sharepointdevelopment
(the last reply of Patrick)
Best Regards,
Wendy
Forum Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
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