standard text not printing

Hi all,

I am using /: INCLUDE ZTEST_TEXT OBJECT TEXT ID ST LANGUAGE EN

in my smart form. nothing is printing.What was the mistake in my statement?It gets printed if I use Include text and give same values.But why doesn't it print Standard text value if use above statement in text element.Please help.

I want to use this statement only because I have seen in SAP HELP that this statement gives the latest version of the standard text value.