But Adobe Acrobat have "Edit Document Text" function.
You click it, then click on the text you would like to select and can operate with it how you can do it in MS Word.
There is a good documentation and description of all methods.
May be it is possible to find text, select it, and then using QTP tools perform the action of editing.
I have no idea what QTP is, but if it can simulate clicks and keystrokes, you can try it. But remember this can and will change between releases of Acrobat.
the problem that I stuck on the step to "findText() " method wich should find text in PDF document.
In the next steps I will try to manipulate with it... but it didn't work in my case but should be.
I have told you clearly. There is no such method for you.
You most likely will need to use an external computer language like C and then use the Acrobat SDK API tools to interact with the PDF.