Unable to Enter data in combobox via Actions class

i have a combobox....n am suppose to enter data in this combobox & later select a value out of listings....
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My code is this....

WebElement SearchGrp=w.findElement(By.xpath("//div[@role='combobox' and @aria-label='Search Facebook']"));
Actions A = new Actions(driver);
A.moveToElement(SearchGrp).build();
A.sendKeys("<grpName>").build().perform();
w.manage().timeouts().pageLoadTimeout(30, TimeUnit.MILLISECONDS);
//A.click(w.findElement(By.xpath("///ul[@id='facebar_typeahead_view_list']/li/span/a/span/span[2]/span/span[2]/span/span[1]"))).build().perform();

[b:3s62hs54]Issue:[/b:3s62hs54]: Anything wrong with code here?
I try to fill in data into combobox & data is put somewherre else.
If i dont use Actions class ,<grpName> goes into appropriate combobox.....

Reference: Have attached pic for reference.