Kendo UI Chart Tooltip default to zero if no data

Kendo UI Chart Tooltip default to zero if no data

I am fixing a "bug" for a tooltip in a Kendo UI chart. The bug is if I am
showing data for a current fiscal quarter which goes through end of
September and I hover over a datapoint after current date, it does show
the date and where it would also show currency (ex. $0.48), it just shows
"$". I need this to default to "$0.00" if it has no data. My current
tooltip template is as follows: .Tooltip(tooltip => tooltip
.Template(string.Format(format, "#=value#") + "#= kendo.format('{0:
(M/dd/yyyy)}',category) #") .Visible(true) );
Can anyone offer suggestions on resolving this? Have googled to no avail.
Thanks much!