Error in XCP communications in Simulink: "Dot indexing is not supported for variables of this type"

Guys,

I was testing to see if I can use Matlab/Simulink to communicate with a XCP control (which I happen to have th A2L file), but I get the following error everytime I try to use the A2L file in a Data Acquisition block:

"Dot indexing is not supported for variables of this type"

see below:

Do you know the reason why? And how can I make it work? I am attaching the A2L file just in case, just change the extension from txt to a2l.