Run "screen" error

[hangyu]

When I use "screen -R -T vt220" and run the application , but found that the line becomes the below symbol , can advise how to fix it ? thx

瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁
瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁
瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁瞁? 瞁瞁瞁瞁瞁

[hangyu]

I have copy and paste the symbol in my application but can't view it in my above post ( become a "?" mark ) .


thx

[hangyu]

It should be a line :
___________________________________________________
| |
| |
|___________________________________________________|


But now become a symbol :

&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
& &
& &
& &
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&