IsDescendantOf (Method)

IsDescendantOf( Instance ancestor )
Returns	bool
Description:	Returns true if the object is an descendant of ancestor.
Member of:	Instance

Description

Tells whether one of the Parents of the Parents of etc.. of the calling object is the argument.

Example

a = Instance.new("Part") -- put a part in workspace
a.Parent = game.Workspace
print(a:IsDescendantOf(game)) -- see if part 'a' is a descendant of workspace

true