-->Error evaluating 'PreCopyFcn' callback of Diode block (mask) 'untitled/Fuel Cell Stack/Diode1'. Callback string is 'sps_rtmsu​pport('Pre​CopyFcn',g​cbh); ' -->Undefined funct

l'm try to use fuel cell and fuel cell stack but when l try to drag them to the workspace l get an error .it seems all the blocks in my simscape electrical aren't dragable to the workspace

[Sumukh]

Hi @Andrew Y,

I am unable to reproduce this issue on my end. If you are using Restricted Mode in Simscape, then this error with the callback is possible when trying to use the model, as stated here:

https://www.mathworks.com/help/simscape/ug/about-the-simscape-editing-mode.html#bq26ch5

Could you please provide the exact reproduction steps along with the model being used?

Also, what do you mean by dragging the fuel cell blocks to workspace?