Problems with IFlatPatternFeatureData

Hello all,

Im just wondering if anyone else has had a problem using this interface..

For example:

swFlatPatFeatData = (IFlatPatternFeatureData)swFeature.IGetDefinition();

swFlatPatFeatData.MergeFace = true;

It doesnt merge the faces on the flat pattern feature... it says it does if i check but when i save and close the file the flat pattern face is still not merged, am I using it wrong?

SolidworksApi macros