You can create a "Dummy Component Array" that will be used only as counter for the values that are previously added to the package with number suffix. This way you use Dummy Component Array just for DWT Repeater and it's TemplateRepeatIndex to create an exact name of package you want to retrieve.
<!-- TemplateBeginRepeat name="MyDummyArray" -->
@@Var_${TemplateRepeatIndex}@@
<!-- TemplateEndRepeat -->
For the "Dummy Component Array" you can use any dummy TCMURI, they can all be tcm:0-0-0.
This way was already explained\ in post what-can-we-loop-over-in-dwt-layout-template-building-blockswhat-can-we-loop-over-in-dwt-layout-template-building-blocks