Using SharePoint SPServices

Question

How to set values to a multi choice field using SPServices in SharePoint ?

1. This Code worked

   $().SPServices({
                  operation: "UpdateListItems",
                  async: false,
                  batchCmd: "Update",
                  listName: "Projets",
                  ID: 53,
                  valuepairs: [
                      ["ProjectName", "Project"],
                      ["ProjectType", "OPPS"],
                      ["ConcernedServices", JSON.stringify($('#select-multiple-optgroups').val())],
                      ["Cible", "Résidentiel"],
                      ["DateRFF", "2014-12-31"],
                      ["DateLancementPrevisionnelle", "2014-12-31"],
                      ["DateDeFin", "2014-12-31"],
                      ["Priorite", "PA"],
                      ["Concept", "dfsf"],
                      ["Reference", "FDF"],
                  ],
                  completefunc: function (xData, Status) {
   
      }});
   

2. But if I want to add multiple choice doesn't work

   $().SPServices({
                  operation: "UpdateListItems",
                  async: false,
                  batchCmd: "Update",
                  webURL: "/sites/ep/",
                  listName: "Projets",
                  ID: 53,
                  valuepairs: [
                      ["ProjectName", "Project"],
                      ["ProjectType", "OPPS"],
                      ["ConcernedServices", JSON.stringify($('#select-multiple-optgroups').val())],
                      ["Cible", "Résidentiel, Business"],
                      ["DateRFF", "2014-12-31"],
                      ["DateLancementPrevisionnelle", "2014-12-31"],
                      ["DateDeFin", "2014-12-31"],
                      ["Priorite", "PA"],
                      ["Concept", "dfsf"],
                      ["Reference", "FDF"],
                  ],
                  completefunc: function (xData, Status) {
   
      }});
   

Cible is a Multiple Choice field in a sharepoint List.

Answer 1

Since SPServices is calling the OOB webservices behind the scenes, in theory the standard means of updating multiple choice values should come into play: Delimit the values with ;#

E.g.

";#Résidentiel;#Business;#"

Note: Order matters. Make sure values are specified in the same order they're defined in the column

Answer 2

I came across this post while trying to achieve the same thing, however this answer didn't work for me. I was eventually able to save multiple values in the lookup field using the following format:

"6;#;#8;#"

Where the numbers are the ID of the list items (to save formatting issues)

With the ID and the title of the list item it looked like this:

"6;#Alcohol:Reports;#4;#Alcohol: News"

Both of these methods successfully inserted the values into the list.