Trying to define a table using code. Get a syntax error for "add foreign key" line of code.

	add table (gcPLANHOME+lcCHTABLE)
		
	use (gcPLANHOME+lcCHTABLE) in 0 excl
	select (lcCHTABLE)
	*remove plan table fields from new ch table
	alter table (gcPLANHOME+lcCHTABLE) drop column inid
	alter table (gcPLANHOME+lcCHTABLE) drop column indatetime
	alter table (gcPLANHOME+lcCHTABLE) drop column chid
	*keep chdatetime

	ALTER TABLE (gcPLANHOME+lcCHTABLE) ADD COLUMN logid I
	ALTER TABLE (gcPLANHOME+lcCHTABLE) ADD COLUMN uwapprvl C(2)

	alter table (gcPLANHOME+lcCHTABLE) add foreign key planid tag planid  && gets "syntax error"
	alter table (gcPLANHOME+lcCHTABLE) add foreign key logid tag logid
	alter table (gcPLANHOME+lcCHTABLE) add foreign key chdatetime tag chdatetime

Where is code wrong? Thanks.