Setting Default Dimension using code in AX 2012

The following method can be used to set the default dimension e.g. on CustTable when importing data via X++

 static DimensionDefault findDefaultDimension(str _businessUnit, str _costCentre, str _jurisdiction, str _subscriberType)  
 {  
   Struct             struct = new Struct();  
   container            defDimensionCon;  
   DimensionDefault        dimensionDefault;  
   DimensionAttributeSetItem    dimAttrSetItem;  
   DimensionAttribute       dimAttribute;  
   int i;  
   //Read required dimensions  
   while select Name, BackingEntityType from dimAttribute  
     where dimAttribute.BackingEntityType == tableNum(DimensionFinancialTag) &&  
        dimAttribute.Type       != DimensionAttributeType::DynamicAccount  
        join dimAttrSetItem  
         where dimAttrSetItem.DimensionAttribute == dimAttribute.RecId &&  
            dimAttrSetItem.DimensionAttributeSet == DimensionCache::getDimensionAttributeSetForLedger()  
   {  
     //Add the Dimension name and value to struct  
     if (_businessUnit && dimAttribute.BackingEntityType == tableNum(DimensionFinancialTag) && dimAttribute.Name == 'BusinessUnit')  
     {  
       struct.add(dimAttribute.Name, _businessUnit);  
     }  
     if (_costCentre && dimAttribute.BackingEntityType == tableNum(DimensionFinancialTag) && dimAttribute.Name == 'CostCentre')  
     {  
       struct.add(dimAttribute.Name, _costCentre);  
     }  
     if (_jurisdiction && dimAttribute.BackingEntityType == tableNum(DimensionFinancialTag) && dimAttribute.Name == 'Jurisdiction')  
     {  
       struct.add(dimAttribute.Name, _jurisdiction);  
     }  
     if (_subscriberType && dimAttribute.BackingEntityType == tableNum(DimensionFinancialTag) && dimAttribute.Name == 'SubscriberType')  
     {  
       struct.add(dimAttribute.Name, _subscriberType);  
     }  
   }  
   defDimensionCon += struct.fields();  
   for (i = 1; i <= struct.fields(); i++)  
   {  
     defDimensionCon += struct.fieldName(i);  
     defDimensionCon += struct.valueIndex(i);  
   }  
   if (struct.fields())  
   {  
     //Get the DimensionAttributeValueSet RecId  
     dimensionDefault = AxdDimensionUtil::getDimensionAttributeValueSetId(defDimensionCon);  
   }  
   return dimensionDefault;  
 }