Text annotations not edited

Hi everyone,
I add the text annotation using below method.
[m_view vAddTextAnnot:posx :posy:textAnnot]
Using this I am able to save the text annotation.
If I edit the text in the TextAnnotViewController then go back from pdf again come back to the pdf, It shows me the text that I entered initially not the Edited one.

Thanks

Hi,

are you saving the pdf file after the update?