Hi, you could use the script call
$cgmzTemp.discoverPictureGalleryPicture("id", true);where id would be a string that is the picture id. You can set game variables to strings, if you wanted to set a variable to a string and then use its value to discover a picture you could do:
const varId = 1; // Change this to the variable id $cgmzTemp.discoverPictureGalleryPicture($gameVariables.value(varId), true);