DataBinding How To access by index ?

<zscript>
	ListModelList strset = new ListModelList();
	for(int j=0; j < 10; ++j) {
		String[] set = new String[] {"key"+j , "value"+j};
		strset.add(set);
	}
</zscript>
			
<grid model="@{strset}">
	<rows>
		<row self="@{each='set'}">
			<label value="@{set[0]}" />
			<label value="@{set[1]}" />
		</row>
	</rows>
</grid>