Automation scripting : Unselect text after formatting

In an Automation Script:

• Fill in the script (example provided below)
• Press "format all" on top right
• Click into the textarea

=> textarea is emptied
=> text should be unselected after formatting to avoid this problem

Script used:
function run(input, params) {
Document.AddPermission(input,

{ /*required:true - type: string*/ 'permission': "", /*required:true - type: string*/ 'username': "", /*required:false - type: string*/ 'acl': "", /*required:false - type: date*/ 'begin': "", /*required:false - type: boolean*/ 'blockInheritance': "", /*required:false - type: string*/ 'comment': "", /*required:false - type: date*/ 'end': "", /*required:false - type: boolean*/ 'notify': false }

);

return input;
}