Passing an Infotable into a Collection widget where the receiving widget in the child is a Chart.

Thingworx 9.4.0.  I thought this would be straight-forward but it's been a nightmare.  As the subject states I'm trying to pass the data from an Infotable into a collection widget. 

Setup:

Parent Mashup:

Collection widget:

Mashup -> set to Child mashup

MashupPropertyBinding:

{
"cva": "cva",
"cvu": "cvu",
"mva": "mva",
"mvu": "mvu",
"TagLabel": "TagLabel",
"TimeStamp": "TimeStamp"
}

Data Service: (Data Properties populated with values)

Child Mashup:

Mashup Parameter

LineTrendingVariables_DS:

Line Chart widget:  (Mashup Parameter data bound)

Result:

I was able to verify that the service is being processed and delivering data by placing a Grid widget in the Mashup to collect the data.  This was successful so I know there is data coming in:

Debug Info:

Here I can see that the system is showing DATA (The mashup parameter shown above in the Child mashup) as undefined.

NOTE:  I'm pretty sure the issue has to do with the MashupPropertyBinding formatting or content but I don't know what that issue might be.