Search for string in paragraph and apply a new character style?

Question

I'm searching for a way to find a specific string in a specific text frame and make it bold. so my thought was to search and then apply a character style from my template doc. I thought this would work, but I went wrong somewhere.
newDoc is my document. 
//something like
var Bios = "Representative Biography:\r want to leave this text normal.";
var myTextFrameBios = newDoc.pages.item(i).textFrames.add({geometricBounds:[4.5277, 2.36, 8.625, 5.375], contents:Bios});
var myTextObjectBios = myTextFrameBios.parentStory.texts.item(0);
// IS THIS CONFLICTING with my change below? Can I apply a character style within a par styled frame?
myTextObjectBios.appliedParagraphStyle = newDoc.paragraphStyles.item("CompanyProfile");
                                                  //Clear the find/change preferences.
                                                app.findGrepPreferences = NothingEnum.nothing;
                                                app.changeGrepPreferences = NothingEnum.nothing;
                                                app.findTextPreferences.findWhat = "Representative Biography:";
                                                app.changeTextPreferences.changeTo = "Representative Biography:";
                                                app.findGrepPreferences.appliedCharacterStyle = newDoc.characterStyles.item("BoldBioHead");
                                                // Perform the operation
                                                app.documents.item(0).changeGrep();
                                                app.findGrepPreferences = NothingEnum.nothing;
                                                app.changeGrepPreferences = NothingEnum.nothing;

Answer 1

@caseyctg – If you want to apply a character style to a text object in a specific text frame, you could restrict the scope of your script to that specific text frame:
Example with the variable "myTextFrame" you have to define before:
myTextFrame.changeText();
Btw.: you are doing a text search and clearing your GREP find/change preferences at the start of the snippet? Why is that?
You could do a:
app.changeTextPreferences = app.findTextPreferences = NothingEnum.nothing;
or:
app.changeTextPreferences = app.findTextPreferences = null;
set before the search and after the change, if you want to be on the safe side…
Uwe