Putting values in a list

[Powersoft]

With this simple code I need to input 10 values in a list.
When running this no values are stored in L3.
What are I do wrong?

Cheers,

Jan

Code:

EXPORT readElemts(YE,TE,IN,RA,EC,WP,MA,MM,M2,RV)
BEGIN
L3:={YE,TE,IN,RA,EC,WP,MA,MM,M2,RV};
END;