Bug mpm returns incorrect value (#917) (#919)

* bug: MPM returns incorrect value

* bug fix suggestion.

Bug had to do when we create a stream from another stream (as we do for stream2). Then we set temperature and pressure on it - but it does not set it on the correct stream

* added init properties

* bug fix

* update

* fix bug

* new fix

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Co-authored-by: Sviatoslav Eroshkin <[email protected]>