How to pass text in configuration file with a call to parameter - ssis

Question

I have a package that sends emails, I have it set with a configuration file so I can pass a parameter with the addresses, attachments, etc. that I want to use, one of these parameters is the Message_source:
in which I pass the content of the email.
my problem comes in that I want to pass formatted text and a dynamic field (date).
how can I do this so I can send something like this:
<Configuration ConfiguredType="Property" Path="\Package.Variables[User::Email_Content].Properties[Value]" ValueType="String">
<ConfiguredValue>here I want to pass a date, here is the date: #Date</ConfiguredValue>
</Configuration>
so I can generate something like this:
here I want to pass a date,
here is the date: 05-01-2023
I know that I can parse the date with:
RIGHT("0" + (DT_STR, 2, 1252) DATEPART("dd" , GETDATE()), 2) + "-" + RIGHT("0" + (DT_STR, 2, 1252) DATEPART("mm" , GETDATE()), 2) + "-" + (DT_STR, 4, 1252) DATEPART("yy" , GETDATE())
however adding this to the config file right away doesn't work.

Answer 1

If it's going to work, I think you're going to add in a few more levels of indirection.
What you want is to have an Expression as the content of a variable. It's happy to assign your string to the Value property but what is being sent is not the evaluated #Date but the literal characters # D A T E
<Configuration ConfiguredType="Property"
Path="\Package.Variables[User::Email_Content].Properties[Expression]" ValueType="String">
<ConfiguredValue>"I want to pass a date, here is the date: " + RIGHT("0" + (DT_STR, 2, 1252) DATEPART("dd" , GETDATE()), 2) + "-" + RIGHT("0" + (DT_STR, 2, 1252) DATEPART("mm" , GETDATE()), 2) + "-" + (DT_STR, 4, 1252) DATEPART("yy" , GETDATE())</ConfiguredValue>
</Configuration>
The same rules will apply with string building and all that so if you want to have it look like "I want to pass a date, here is the date: #Date" then you need to build out a valid expression. I'd create a Variable named Test and plug away until I get the syntax correct and then slap that, carefully, into your XML/dtsconfig
"I want to pass a date, here is the date: "
+ RIGHT("0" + (DT_STR, 2, 1252) DATEPART("dd" , GETDATE()), 2)
+ "-" + RIGHT("0" + (DT_STR, 2, 1252) DATEPART("mm" , GETDATE()), 2)
+ "-" + (DT_STR, 4, 1252) DATEPART("yy" , GETDATE())
Finally, if that isn't working then ensure that #[User::Email_Content] has the EvaluateAsExpression property set to True