I am unable to mash up the code to get the parameters to be passed to the pega page from my web.In the picture below i have given an example of what my requirement is.

I have tried with 'data-pega-event-onpagedata' and data-pega-action-param-model ='{Context:"Appname",ParamOne:"FirstName",ParamTwo:"LastName"}',and some of the other techniques from pdn but it seems nothing is working for me.