Set the earliest date in a calendar to a value from a read_data function

Hi
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I need to set the earliest collection date in a calendar to be the end date of the previous booking.
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I can access the previous booking end date with {var:read_last_booking.end_date} , but I do not know how to put this value into the Earliest date/time filed
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Thanks

Hi stikkimorey,
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If that has a YYYY-MM-DD format then I think you can enter it directly in the Earliest date/time box.
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Bob

I was hoping so.
Here is the value I am putting in:  {var:read_last_booking.last_booking.end_date}

When I run it in a debugger on the form I get:    2019-01-10

But I can select any date I like in the calendar when I put it in
the
the Earliest date/time box...

Hi stikkimorey,
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Please post a link to the form/listing so that we can take a quick look.
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Bob

Thanks Bob - sent via PM
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Mikki

Try {date:Y-m-d$(var:read_last_booking.last_booking.end_date)}

Thanks - I just tried that, but no success.

To get round this, I put another calendar onto the form, gave it the data source, set it's attributes to hidden in the advanced tab, and then used it's ID in the advanced tab of the first calendar. Clunky, but it works.