Help with Synoptic Panel

Hi,

Need help for Synoptic Panel. So I have a data of Risk which in Matrix visual is already correct.  The raw data is like this :

And in Power BI, created a simple measure like this :

And then I've created a Synoptic Design  in which I map the combination of SeverityLikelihood in each of the block. Back in Power BI, import the image in Synoptic Panel while put the Category and Measure with its data.

The result is actually correct, but somehow the value is not appear in the box. I have to hover my mouse then in tooltips I can see the value is correct.

If you see the picture, the tooltips is correct, compared to the right whcih is the Matrix Visual of it.

In the properties of this visual, the Data value only manage the background color, whcih is I have to put the same color as the image. But there is no setting for Data Value, or have I missed something ?

Any help will be appreciated.

Thanks,