I am trying to read the queried data from a serial COM port using Instrument Query block from Instrument Control Toolbox, where the input being queried is supposed to be one character such as 'C'. I would like to use the queried data in an if-statement block such that if it's equal to a certain character, then the model connected to the output is enabled and runs. However, since the queried data is in ASCII format, I added ASCII to String block to do the conversion. Despite all that, I get a syntax error as shown in the figure below. Could the issue be in my If expression?