Just trying to add to the discussion, maybe he is requesting the ability to write the statement as he put it ( Model.parameters["Parameter_1"].value) directly in the Queue properties "max content" field, instead having to use flexscript code.
This is something I struggled a bit in my FlexSim transition from ProModel years ago which has that ability. There you can writhe various different types of data (such as tables, global variable, labels, etc. ) directly in their properties fields. I believe that feature makes it easier and faster to input data to objects and is more intuitive, specially for people initiating in FlexSim. Would indeed be a very nice feature to have;
Although Flexscript code gives you the power to do it with several object at the same time once you have all the info properly prepared and already have a better fluency in flexscript, model triggers, user script it is good for big projects, that good, but for small and fas projects it gets a bit as a overcomplicated and time demanding compared to just write directly in the propriety field.