Thanks @leocwlau  for sharing the article.   Will try troubleshooting the extension.

Hi @leocwlau ,   Apologies for the delayed response.   Yes, the activity map is seen on the omnibug, adobe extension debugger and workspace reports.

okay @Jennifer_Dungan , Got your point.   I'll check the namespace thing and will get back on this.

 Overwrite value of (prop/evarX) with contextVariableY  if  contextVariableY is set

Yes, Overwrite value of (prop/evarX) with contextVariableY is how we are using.   No rules have been used in launch. Everything done from app dev., so probably the dev will know the conditions.

We are using context data and processing rules sorry didn't mention earlier.   AEP Assurance we aren't using.

Hi @Jennifer_Dungan ,   Yes it's a custom eVar.   We have different report suite for web and app.   We are expecting only two values from "Platform" dimension - Android and iOS.   As per the app dev, we could see the value iOS being correctly passed in the eVar, but in reports it shows undefined.  

Hi,   For one of our mobile implementation, we see the dimension 'Platform' as 'unspecified' for iOS. What could it be?      

Hi @leocwlau ,   the site is in the development phase.   I have checked in the workspace reports and can see the dimension and metrics for activity map.   On the other hand, I want to see data in tabular format via the activity map plugin but it just shows loading, any solution for that?  

Checked using Adobe Experience Platform Debugger, it does show Activity Map.