Connecting Aspen files with Matlab. Struct contents reference from a non-struct array object.

Hello everyone,

I am currently trying to solve a recycle problem in Aspen Plus using matlab.

This error apears and I don't know how to solve this .

Struct contents reference from a non-struct array object.

Error in Thema1_try1 (line 66)

f1(1)=Aspen.Tree.FindNode('\Data\Streams\WAT-1\Output\STR_MAIN\MOLEFLOW\MIXED\WATER').Value;

Do you have any ideas? Thank you!