Local variable saved on TLOG

Hello to everyone i have a question if anybody knows to help me.
I have wrote a script, i use “gcs:send_named_float” to see the data on quick tab, three different variables.
The problem is that only the one of three variables is saved on the tlog file.
I declare all three variables after function update one after another as local and in the same function i use “gcs:send_named_float”.
I made some testing and i realize that only the first variable that i declare is saved in the tlog file.
Do you know why is happening this and how can i fix it?
Thank’s for your time.