iif(
(
(iif(Fields!customeridEntityName.Value is nothing, 0, 1) +
iif(Parameters!CRM_URL.Value is nothing, 0, iif(Parameters!CRM_URL.Value = "",0,1))) <> 2),
System.DBNull.Value,
iif(Fields!customeridEntityName.Value = "account",
Parameters!CRM_URL.Value & "?OTC=1&ID={"& Fields!customerid.Value.ToString() &"}",
iif(Fields!customeridEntityName.Value = "contact",
Parameters!CRM_URL.Value & "?OTC=2&ID={"& Fields!customerid.Value.ToString() &"}",
System.DBNull.Value)
)
)
