Code for show/hide or delete BOM qty column?

Part of one of my macros resizes the BOM table. I have triedto get it to add or delete the quantity column in the BOM. Withoutthe API you can hide and show the qty column but can not delete it.In the API I haven't been able to find the code to hide or show itand the code to delete the columns will not delete the qty column.
I have added a sample macro that will find the BOM on a SW sheetand after finding it will delete columns and change the title of acolumn. But it will not delete the quantity column. Does anyoneknow the code hide and show the column?
Dan Miel
SW sp4
SolidworksApi macros