Hi guys.
I'm trying to draw a graph. In this graph x-axis will be Vce and y-axis will be Ic.
But I get an error. It says not a valid parameter for model type.
I'll share the screenshots. Can you guys please help me to find a solution.
Thanks Allready

 

It appears that both your probes measure current (I). Then the left probe measures base current from the 2V supply and the right probe measures collector current from the 12V supply.
Nothing measures Vce.

 

The model BC237 does not have a parameter named "VCE", so "VCE" should be removed from the "Parameter name" field of the "simulation settings".