Tag Index

When you the dataset will return multiple records but you need to select just a single index of present you can use indexing.

example explanation
{{column_name}} no indexing. All dataset rows will be used.
{{column_name[]}} this is a tag has an empty index and the index will be ignored
{{column_name[0]}} will use the value of the first row.
{{column_name[1]}} will use the value of the second row.
{{column_name[1,2,3]}} will use the value of the first three rows
{{column_name[1][2][3]}} will use the value of the first three rows (same as above)
{{column_name[0]}} {{column_name[1]}} will use the value of the first row for the first tag and the second row for the second tag.