Invalid constraint attribute name for addCrossPa​rameterCon​straint

I am building a Simulink mask programatically and came across an issue while trying to add a cross-parameter constraint with maskObj.addCrossParameterConstraint. It requires a constraint name and a rule (error message is optional). However, 'Rule' comes up as an invalid constraint attribute name. Anyone else come across this or know what the attribute name should be?

**My script:

blockMask.addCrossParameterConstraint('Name','UniquePortNames',...
'Rule','strcmpi(PortName_1,PortName_2)==0',...
'ErrorMessage','Some ports are not accounted for.');

**Result in command line:

Invalid constraint attribute name, 'Rule'.

Answer 1

[MJ Canavate Sanchez]

Hi Rachel, try setting the property name to 'MATLABexpression' rather than 'Rule':

CrossConstraint = maskHandle.addCrossParameterConstraint('Name','constraint1',...
'MATLABexpression','mod(parameter1,parameter2) == 0','ErrorMessage','Invalid parameter')