createIndex does not work for function based indexes anymore

With Liquibase 2.0.5 ist was possible to create function based indexes with the createIndex tag:

<createIndex indexName="IX_MYINDEX" tableName="TABLE1" unique="false">
<column name="lower(anystring)"/>
</createIndex>

With Liquibase 3.0.7 the column name is escaped and Oracle returns 'ORA-9984: invalid identifier', since the function is contained in quotes.

What is the suggested solution for this problem?