Sharepoint batch for MultiChoice field value insertion - web-services

Question

So i have a problem regarding usage of sharepoint list webservices.
I need to get the syntax right for Sharepoint batch script for insertion of new items.
Everyhing works fine except multichoice field type.
I insert the data, but nomatter how i do it, it shows up on SP list item details OK, but when trying to edit item in SP, i see, that SP have taken the value i sent to this field as text string, and does not check the items i have saved as selected.
The script for now is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<Batch OnError="Return">
<Method ID='1' Cmd='New'>
<Field Name='SecurityCheckpoints'>1st checkpoint;2nd checkpoint</Field>
</Method>
</Batch>
Definition for that field is like this:
<Field Type="MultiChoice"
DisplayName="Checkpoints allowed"
Required="TRUE"
FillInChoice="FALSE"
ID="{guid-guid-guid-guid-guid}"
SourceID="{guid-guid-guid-guid-guid}"
StaticName="SecurityCheckpoints"
Name="SecurityCheckpoints"
ColName="ntext2"
RowOrdinal="0"
Version="4">
<CHOICES>
<CHOICE>1st checkpoint</CHOICE>
<CHOICE>2nd checkpoint</CHOICE>
<CHOICE>3rd checkpoint</CHOICE>
</CHOICES>
<Default>1st checkpoint</Default>
</Field>
I have to implement something like custom UI for sharepoint in different-purpouse silverlight app, and so i am using my own webservice to be a proxy between SP and SL, i retrieve SP list definition and dinamicaly build UI controls, so user can fill in the forms.
How do i form the script, so items are selected(ticked) in the SP instead of SP saving them as just string value?
If I use script with only one item ("1st checkpoint"), SP processes it ok, it there is many, data is saved as text string?
What i am doing wrong? How do i correctly seperate multiple values?
I have searched high and low, but have not found example of SP update script, where multichoice sample is included.
Thank You in advance!

Answer 1

I found the sollution - it was too easy:
instead of seperating the choice values using semicolon ";", they had to be seperated using ";#", and putting it in front and in behind the whole list.
So rather than using this:
1st checkpoint;2nd checkpoint
<?xml version="1.0" encoding="UTF-8"?>
<Batch OnError="Return">
<Method ID='1' Cmd='New'>
<Field Name='SecurityCheckpoints'>1st checkpoint;2nd checkpoint</Field>
</Method>
</Batch>
It had to be done like this:
;#1st checkpoint;#2nd checkpoint;#
<?xml version="1.0" encoding="UTF-8"?>
<Batch OnError="Return">
<Method ID='1' Cmd='New'>
<Field Name='SecurityCheckpoints'>;#1st checkpoint;#2nd checkpoint;#</Field>
</Method>
</Batch>
PS:I dont know was it correct way to do this, but I answered my own question. Just for others to know.

Answer 2

I run code below successfully.
<?xml version="1.0" encoding="UTF-8"?><ows:Batch OnError="Return">
<Method ID="0"><SetList>3933c528-5747-4fc7-bdec-6465294997dd</SetList>
<SetVar Name="Cmd">Save</SetVar>
<SetVar Name="ID">New</SetVar>
<SetVar Name="urn:schemas-microsoft-com:office:office#Temp_UNID">8D8DE35CFFE9EEEAC12570920052A8FD</SetVar>
<SetVar Name="urn:schemas-microsoft-com:office:office#Title"> - Birch Data Exchange Specification</SetVar>
<SetVar Name="urn:schemas-microsoft-com:office:office#C0370A_Agora_DocNum">8AL020210178ZZASB</SetVar>
<SetVar Name="urn:schemas-microsoft-com:office:office#C0370A_Agora_Phase"></SetVar>
<SetVar Name="urn:schemas-microsoft-com:office:office#C0370A_Agora_Author">Jerome BOURGER</SetVar>
<SetVar Name="urn:schemas-microsoft-com:office:office#C0370A_Agora_ServicesOri"> </SetVar>
<SetVar Name="urn:schemas-microsoft-com:office:office#C0370A_Agora_Type">;#3 - Quality Plan;#Objectives;#Progress Plan;#Follow-up;#Reports;#</SetVar>
<SetVar Name="urn:schemas-microsoft-com:office:office#C0370A_Agora_Keywords"></SetVar> </Method></ows:Batch>