Does the array function in Magic not support adjusting the width between units? Or am I doing something wrong?

% array help
    count 		[[xlo] xhi [ylo] yhi]	array subcells
    width 		[value]			set or return array x-spacing
    height 	[value]			set or return array y-spacing
    pitch 		[x y]			set or return array spacing
    position 	[x y]			set or return array origin
    help					print help information
% array width
Cell use "sky130_fd_sc_hd__inv_1_0":x separation 352
% array width 350
Unimplemented function.
%