Set value of multiselect property

Question

Hi,
I have created a multiselect metadata property.
How can I set its value programmatically?

Answer 1

Hi Detlev,
Thanks for your answer. I am able to set multivalued property of a resource. But the problem I am facing now is, property is set only if it has some default value initially. If no value is set, then I am getting exception as 'property is not multivalued'.
My code is :
final String CREATED_BY_PROP_PREFIX =
                    "http://sapportals.com/xmlns/cm";
          IPortalComponentRequest request =
                    (IPortalComponentRequest) this.getRequest();
               try {
                    IUser user =
                         WPUMFactory.getUserFactory().getEP5User(request.getUser());
                    ResourceContext ctxt = new ResourceContext(user);
                    RID rid = RID.getRID("xyz/content/a.xml");
                    IResource res =
                         ResourceFactory.getInstance().getResource(rid, ctxt);
                    if (res != null) {
                         IPropertyName propName =
                              new PropertyName(CREATED_BY_PROP_PREFIX, "propname");
                         IProperty p = res.getProperty(propName);
                         IMutableProperty mutableProp = null;
                         mutableProp = p.getMutable();
                         mutableProp.addValue("val1");//here is exception
                         mutableProp.addValue("Val2");                         
                         res.setProperty(mutableProp);
               } catch (Exception e) {     }