SIMetrix/Simplis simulations: creating new parts

Howdy, has anyone here used the SIMetrix Simplis circuit simulation tool? It’s like LTSpice or other spice modeling sims. I’ve been trying to create my own parts, and that has worked well, but now I want to use variables in the circuit models and have the user select values from a drop-down menu for these custom parts. As an example I tried making a resistor with drop-down menu to choose resistance but it just isn’t working. I’m sure I’ve got a syntax error somewhere in the parameters or properties but I don’t know what to do and I need help.

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