[yuhai]

Good day!
I have written a short fortran code, and linked as a user function, the name is "asource", then I use it as source for an additional variable with name "HL", the variable is dimensionless.

if i write the Source as "asource", then i have error report:
Bad expression value 'asource' detected in parameter 'Source' in object '/FLOW:Flow Analysis 1/DOMAIN:circ/SUBDOMAIN:Subdomain 1/SOURCES/EQUATION SOURCE:HL'.
CEL error:
The following unrecognised name was referenced: asource.

if i write the source as "asource(1[])", then i have error report:
Expression resolves to invalid units ('dimensionless') in value set for parameter 'Source' in object '/FLOW:Flow Analysis 1/DOMAIN:circ/SUBDOMAIN:Subdomain 1/SOURCES/EQUATION SOURCE:HL'. Expected units: 'kg m^-3 s^-1'.

and if i write the source as "asource (1[kg m^-3 s^-1])", then i have error report:
Bad expression value 'asource (1[kg m^-3 s^-1])' detected in parameter 'Source' in object '/FLOW:Flow Analysis 1/DOMAIN:circ/SUBDOMAIN:Subdomain 1/SOURCES/EQUATION SOURCE:HL'.
CEL error:
The dimensions of the argument to function 'asource' are inconsistent with expected dimensions.
Argument dimensions resolve to 'kg m^-3 s^-1'; expected '<dimensionless>'.


I just have no idea how to give the expression for the source item.
Very thankful for any suggestion.