ScaleTransform(Single, Single, Single, Vector3) Constructor

public ScaleTransform(
	float scaleX,
	float scaleY,
	float scaleZ,
	Vector3 pivotPoint
)

Parameters

scaleX  Single

x scale factor

scaleY  Single

y scale factor

scaleZ  Single

z scale factor

pivotPoint  Vector3

custom scale origin as Vector3

Reference