Evaluating Item keys in Trigger descriptions.

[h_y_i_e_n]

How can I evaluate an item key inside a trigger description?
eg. trigger prototype from LLD rule:



With the above, the item isnt evaluated, simply copied as is.

[Semiadmin]

In this case, just use macro {ITEM.VALUE1}. In general case, you try to use macro {host:key.func(param)}, but it doesn't support in trigger description.