Sync Rule custom expression for Multi valued attribute

Hi Everyone,

I have one requirement for one of my clients. I need to do the OU movement and I have to use a value from a multi-valued attribute. such as:

1) One multi-valued attribute into Meta-verse multitest has "123 345 346" values.

2) I need to use value "345" to send user into particular OU into Active Directory.

3) I tried to do this by using : IIF(Eq(multitest,"345"),"CN="+accountName+",ou=accounts,dc=b,dc=c","CN="+accountName+",ou=users,dc=b,dc=c") 

But I was unable to search this value into multi valued attribute. 

Is there any other way or function to get a value from multi valued attribute. I know I can do this in Rule extension but I am looking for Sync Rule based solution.

There must be something that I can use.

Thanks in advance.

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