processmaker-files/workflow/engine/xmlform/setup/pluginImport.xml

<?xml version="1.0" encoding="UTF-8"?>
<dynaForm name="pluginImport" type="xmlform" width="500px" labelWidth="200px" enableTemplate="1">
  <TITLE1 type="title">
    <en><![CDATA[Import Plugin]]></en>
  </TITLE1>
  <MAX_FILE_SIZE type="edit" mode="view">
    <en><![CDATA[Maximum upload file size in bytes]]></en>
  </MAX_FILE_SIZE>
  <PLUGIN_FILENAME type="file">
    <en><![CDATA[File]]></en>
  </PLUGIN_FILENAME>
  <SAVE type="button" onclick="verifyFile(this.form);">
    <en><![CDATA[Import]]></en>
  </SAVE>
  <BTN_CANCEL type="button" onclick="cancel();">
    <en><![CDATA[Cancel]]></en>
  </BTN_CANCEL>
  <JS type="javascript" replacetags="1"><![CDATA[
var verifyFile = function(oForm) {
    if (document.getElementById('form[PLUGIN_FILENAME]').value != '') {
      oForm.submit();
    }
    else {
      msgBox('@G::LoadTranslation(ID_PLEASE_SELECT_PLUGIN)', 'alert');
    }
  };

function cancel(){
    history.back();
}

]]></JS>
</dynaForm>