Add a unitless user parameter into an assembly

Here's a function to do that:

// Adds a unitless user parameter and its value into an assembly...

void AddUserUlParamToAssembly(CComPtr<AssemblyComponentDefinition>& pAssemblyCompDef,

                             const CString& kcsParamName,

                             const double kParamValue)

{

   // Parameters contains two lists, Model and User...

   CComPtr<Parameters> pParameters ;

   pAssemblyCompDef->get_Parameters (&pParameters) ;

   // Get the model parameters list...

   CComPtr<UserParameters> pUserParameters ;

   pParameters->get_UserParameters (&pUserParameters) ;

   CComVariant varValue(kParamValue);

   CComVariant varUnits(L"ul");

   CComBSTR bstrVarName(kcsParamName);

   HRESULT hRes = pUserParameters->AddByValue(bstrVarName, varValue, varUnits);

   if (FAILED(hRes)) {

       TRACE (L"Could not add user parameter <%s> to assembly", kcsParamName);

   }

}

It seems like you cannot specify int or double, all parameters are doubles.