Parent variables in matrix

Hi,

in a fader matrix I had this code for the midi out :

props.address =  "/control"
props.preArgs = [@{variable_@{parent.variables.device}_mc}, 70 + cc[$] + @{variable_@{parent.variables.device}_cc}]
props.target = @{variable_midi_out_port}
return props

It was working great before and now the preArgs can't use the parent.variables.device I need to use a static parameters.
Is it a modification in the use of matrix ?
best

It's a regression now fixed in v1.9.14.

thx
I discovered it during the line check of a venue ahah