Ok i get it to run, not perfect but ok.
I add this to my snippet
$modx->regClientCSS('/modx_demo2/manager/assets/ext3/resources/css/ext-all-notheme-min.css');
$modx->regClientCSS('/modx_demo2/manager/templates/default/css/modx-min.css');
$modx->regClientStartupScript('/modx_demo2/manager/assets/ext3/adapter/ext/ext-base.js');
$modx->regClientStartupScript('/modx_demo2/manager/assets/ext3/ext-all.js');
$modx->regClientStartupScript('/modx_demo2/manager/assets/modext/build/core/modx-min.js');
$modx->regClientStartupScript('/modx_demo2/manager/assets/modext/modext-min.js?v=207pl');
The Input Tags Rendered and Runs fine but i get one error from firebug
MODx.fireResourceFormChange is not a function
MODx.fireResourceFormChange();
But what do i need to do to not get this error anymore? And I get no File, Picture or Date Field rendered for Input. Tags, Text, Richtext, Resourcelist, List, Dropdown and more runs perfect.
Hope someone can help.
Thx