How to disable and enable the multi value list in ARAS
You can look at this blog post for some examples of how to disable the various fields in a Form.
Essentially, every field can be disabled in two steps:
var input = getFieldByName("YOUR_FIELD_NAME");
input.getElementsByTagName("INPUT_TYPE").disabled = true;
The multi-value list fields use a select node as input, so you can disable the field by using
input.getElementsByTagName("select").disabled = true;
Aras Labs Software Engineer