Template Variable Formatting Options - missing URL format

Hello,

How can I pass multiple, selected variables in an url linking to a different dashboard?
What Grafana seems to be expecting is the following format:

var-<varname>=value1&var-<varname>=value2

By checking https://grafana.com/docs/grafana/latest/variables/advanced-variable-format-options I haven’t found any format, producing this syntax.