Possibility of adding hanging without affecting left indent of the paragraph.

[mwashambw]

I have problem in my document paragraphs
If i inspect the document, I find the values of left indent and hanging is different from what I have set previous from my code.
For example, if I put left indent: 0 cm and hanging: 1.9 cm, the generated document have left indent: - 1.9 cm and hanging:0 cm.
And if I try to change them manually in paragraph setting it work as I want
I don't understand why this occur.