What is the correct general syntax for dynamic date time expressions in Tosca?

• A. {DATE[BASEDATE][OFFSET][FORMAT]}
• B. {<EXPRESSION>[BASEDATE][OFFSET][FORMAT]}
• C. {<EXPRESSION>[<BASEDATE>][<OFFSET>][<FORMAT>]}
• D. {<EXPRESSION>[BASEDATE][OFFSET][FORMAT]}

Answer: (C)

In Tosca, dynamic date time expressions are built with a clear pattern: the essential part is the actual expression, shown inside angle brackets, and any optional adjustments are added as separate blocks in square brackets, each containing its own angle-bracket placeholder. The whole thing lives inside curly braces, marking it as a dynamic date-time token.

This exact structure is why the best choice uses the required expression inside and then lists the optional components as [], [], and []. The brackets indicate optional parts, so you can include any combination of base date, offset, and format as needed, while the angle brackets denote placeholders to be filled with the actual values.

For example, you could have a token that specifies the expression and an offset and a format, like {[][]}. If you don’t need base date, you simply omit that part. The other options fail because they either drop the angle-bracket placeholders where Tosca expects them or treat the optional parts as mandatory, which isn’t how the syntax is defined.