Handling case sensitiveness in Siebel Adapter

Siebel GUI has the feature where it handle the case sensitive search with the help of ~ LIKE operator. However webMethods Siebel Adapter does not have a operator like that, though it has an operator like LIKE. Does it make sense for me to understand that this is a limitation in webMethods where it does not have this feature. More than webMethods limitaion, I am concerned, if there is a way to handle case sensitiveness with Siebel Adapter or any other means ?