Hi Anis - you have to include a single point object (draw it with Draw curve / Move / Point ) which will be used as the center of each scaling operation.
Draw any objets + one point
Select all : apply a classical Array (even with Array on Curve)
Select all (Objects + Points) except the curve (if Array Curve)
Alt + S (if you have this ShortCut)= Scale Array : enter your regulates
That all ;)