pointing to files in home within Exec and Icon

[Sven]

Hi list,

i created this menu-entry:
/home/sven-tek/.local/share/applications/sanduhr.desktop

[Desktop Entry]
Name=Sanduhr
Comment=Reminder Program
Exec=/home/sven-tek/.local/bin/sanduhr
Icon=/home/sven-tek/.local/share/pixmaps/sanduhr/logo.png
Type=Application
Categories=Application;Utility;

i expected something like this to work, but is does not:
Exec=~/.local/bin/sanduhr
Icon=~/.local/share/pixmaps/sanduhr/logo.png

or/and this:
Exec=$HOME/.local/bin/sanduhr
Icon=$HOME/.local/share/pixmaps/sanduhr/logo.png

or/and this:
Exec=$XDG_CONFIG_HOME/.local/bin/sanduhr
Icon=$XDG_CONFIG_HOME/.local/share/pixmaps/sanduhr/logo.png

Have i done something wrong, or is it something thats not in the
standard?

...it would be usefull because its more general.

sorry for double posting, did not want to confuse with a mistake on ./bin <-> ./local/bin

regards, Sven Jaborek