"ERROR Error in setting: "Cpsteam" via the expression: steamCp(T[k])@steam Error found at the start of the line, at item: steamCp unrecognised name"

how this error happen,? and is that "steamCp(T[k])@steam" wrong format?

thanks~

"ERROR Error processing user functions: Failed to get dimensions from unit string"

why this happen……？

thanks a lot~