Need to to capture a grid column value, using the onchange event.

Dynamics 365 8.2.3,

We are running Dynamics 365 8.2  and having an issue with editable grids.  When using the editable grid, XRM.Page is not supported so code to summarize grid data and update a field on the parent form only works when the form is Refreshed, not when the value is edited “in-line”.

I can make this work, but I need to to capture the grid column value, when changed on the “onchange” event.

According to the documentation I have found, the code examples seem to utilize Dynamics 365.  I’m not sure the Javascript we have supports the examples I have seeing online…specifically the “getFormContext”

Please review the code below and let me know what I need to change.

Thanks

function pvalue(context) { 
    alert("here");  //this works
 
    var estimatedvalue = context.getFormContext().data.entity  // this does not
    var val = estimatedvalue.attribute.getByName("ring_estimatedvolume");
    alert(val.getValue()); 
}
 

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