Input function data to an expression
 

I have temperature dependent properties saved in a function that I would like to call into an expression - is this possible and how would I go about doing so?

Not sure I understand you correctly, but you can use user functions in CEL expressions.
Example:
A function called 'BCinlet' with the data field 'Velocity u' can be used in an expression as BCinlet.Velocity u(x,y,z)

Thanks for your reply.

I must have forgotten to put the (T) at the end as it now appears to be working.

Cheers,
Stuart