Variables in BEx Query only show key values

Hello,

I'm working with SAP Lumira 1.29.3 and when I create a new connection to a BEx Query that has 3 Variables, in the prompt window of the data acquisition process, the variables only show the key values, not the text values. Moreover, if I try to change the shown value, it only allows the key one.

I attach an screenshot:

If you see the image, the variable P&L only shows the values with the key format and if I try to change the format, it only allows the key visualization, the other options are marked in grey.

Is this a known limitation?

Thanks