DTSTransform.DataConvert Programmatic Access?

I am trying building a package from code. I have been able to follow the SSIS samples and build my control flow with foreach loop and SQL Commands pretty easily.

The data flow has been a different story, I am struggling with input and output columns. I trying to read from a flatfile, convert data, perform a lookup, and update or insert based on the results of the lookup. I was able to build this package in the designer and it works just as I want, but I am having problems duplicating the data flow in the code.

I was able add the flatfile, data conversion, and insert controls on the data flow and linked them together. However, I cannot figure out how get the input columns in the data convert object to become selected and generate the converted output columns.

I have tried to refresh metadata and mappings column, but to no success. The only custom property for this component seems to be SourceInputColumnLineageId, but I cannot figure how to set it. Can someone give me nudge or push in the right direction?

Here is what is left of my code:

IDTSComponentMetaData90 convert= dataFlow.ComponentMetaDataCollection.New();
convert.ComponentClassID = "DTSTransform.DataConvert";

// Get the design time instance of the component and initialize the component
CManagedComponentWrapper instance = convert.Instantiate();
instance.ProvideComponentProperties();

IDTSPath90 path = dataFlow.PathCollection.New();
path.AttachPathAndPropagateNotifications(srcComponent.OutputCollection[0], onvComponent.InputCollection[0]);

// Reinitialize the metadata.
instance.AcquireConnections(null);
instance.ReinitializeMetaData();
instance.ReleaseConnections();

// Iterate through the inputs of the component.
IDTSVirtualInput90 vInputLkUp = convert.InputCollection[0].GetVirtualInput();
foreach (IDTSVirtualInputColumn90 vColumn in vInputLkUp.VirtualInputColumnCollection)
{
IDTSInputColumn90 col = instance.SetUsageType(convert.InputCollection[0].ID, vInputLkUp, vColumn.LineageID, DTSUsageType.UT_READONLY);
//instance.SetInputColumnProperty(convert.InputCollection[0].ID, col.ID, "SourceInputColumnLineageId", 1);
}