Urgent - help

i know this sounds easy to you guys … but i couldn’t get it done …

i have 2 button and a text area in my movie …
and what i want to do is that … when i pressed my button , a letter A will appear in the text area … and when i press another button , second alphabet will appear after the first onee … can someone teach me this ?? plsss … need to know it immediately …

what is the as needed for both the buttons and the text area ? …

for now , i’ve assigned variable textarea for my Textarea …

and i’ve put this code in my button .

on (press) {
textarea.text = " A ";
}

is this wrong ?? …