Commas in template are ignoring. How to use the enumeration?

[v3n1kk]

Hello! How can I use comma into cronjob? I just want to enumerate some dates in the schedule.
For example, this is my erb template:

some_cronjob:
minute: 0
hour: 0
date: 1,16
command: "some_command"

And I got this:

0 0 116 * * root some_command

Commas are ignored. I just need to enumerate days.
What do i need? Thanks for answer in advance!

[bschonec]

@v3n1kk specify the date as an array eg: ['1', '16']