Possible mql5 bug - string

[mqltools]

I'm modifying PositionInfoSample.mq5, and I added comment display capability.

The following code DOESN'T work:

const string a = m_position.InfoString(POSITION_COMMENT);
m_label_info[14].Description(a); 

The displayed result is: "Comment: 1".

The following code, however, does work: 

m_label_info[14].Description(m_position.InfoString(POSITION_COMMENT));

The position's comment is displayed correctly (as string).

What's the reason for this? If this behavior is correct, then, how to display a comment using variable indirection?

I'm attaching the whole PositionInfoSample.mq5 with my (albeit very small) modifications. 

[Rashid Umarov]

What do you mean? There is just our code without your modifications here, we have checked and it works properly. Please, provide mode detailed information.

[mqltools]

I'm sorry! I didn't notice that the new metatrader writes everything in user's local folder. I just uploaded code from /Scripts from Program Files Metatrader's folder.

I'm attaching the correct version. 

(it's in the InfoToChart function)