Long-press = Capitalize - autohotkey

Question

Intended Hotkey Function: Capitalize character if key pressed longer than 0.2s
Occurring Problem: When typing "vbnm" in a row in a fast manner (which means I am pressing a the next key while still holding down the previous one) then AHK outputs just x-times the key that was pressed first, resulting here in "vvvv".
That is the code. Please help me out (y) :-)
$y::
$x::
$c::
$v::
$b::
$n::
$m::
key := SubStr(A_ThisHotkey, 2)
;MsgBox, %key% ;it recognizes/shows all keys pressed correctly,
;but in the end it prints just x-times the key that was pressed first
;whereby x is the number of keys pressed very quickly in a row
KeyWait, %key%, T0.2 ;Long press = capitalize
If ErrorLevel
SendInput +%key%
Else
SendInput %key%
Return

Answer 1

So finally this code seems to work, beside the little inconvenience when holding the key much too long, resulting in e.g. "Oo".
;For normal characters ......
$x::
$c::
$v::
$b::
$n::
$m::keyFunc(SubStr(A_ThisHotkey, 2))
keyFunc(key) {
Critical
KeyWait, %key%, T0.3 ;Long press = capitalize
SendInput % ErrorLevel ? Format("{:U}", key) : key
Return
}
;For special characters ......
$2::
$3::
$4::
$5::
$6::
$7::
$8::
$9::
$sc01A:: ;ü
$sc027:: ;ö
$sc028:: ;ä
$sc00C:: ;ß
$sc033:: ;,
$sc034:: ;.
$sc035:: ;-
$sc01B:: ;+
$sc02B:: ;#
$sc00D:: keyFunc2(SubStr(A_ThisHotkey, 2))
keyFunc2(key) {
Critical
KeyWait, %key%, T0.3 ;Long press = capitalize
If ErrorLevel
SendInput +{%key%}
Else
SendInput {%key%}
Return
}

Answer 2

try:
$y::
$x::
$c::
$v::
$b::
$n::
$m::keyFunc(SubStr(A_ThisHotkey, 2))
keyFunc(key) {
KeyWait, %key%, T0.3 ;Long press = capitalize
SendInput % ErrorLevel ? Format("{:U}", key) : key
Return
}