Move Objects Horizontally

Hi,

     How to use the below option to move the selected objects (multiple objects). move command is for a single object.  So I had grouped and moved. When i do that layers were changed.How to use that for multiple selection without changing layer.

app.selection.move([x,y])               //     Used this line for group/loop inside for single object

Manual Process:

     1. Selection is there for multiple objects.

     2. Object -> Transform -> Move -> Enter Horizontal Value and give enter.

     Its fine with the above manual process.  When i do with groupped objects layers were changed. So if i proceed for multiple selection with for loop, objects are not visible.

Thanks,

Sudha K