Error finding parent directory when using valueClobFile attribute

I am currently using liquibase to carry out an update to an existing table in a sql database. I have included the xml script which i have written below.

The problem occurs when trying to use the valueClobFile attribute. I am trying to specify a file location in another parent directory, However the liquibase script does not like redirecting more than one parent directory up. For example in the code below the file path of valueClobFile="../customer-data/CustomerDesc.json" works perfectly.

However when trying to navigate more than one parent directory up, the file path seems to fail. e.g.

valueClobFile="../../raw-data/customer-data/CustomerDesc.json"

<changeset id="add customers" auther="jaypal">

      <update tableName="CUSTOMER_LIST">

            <column name="RAW_DETAILS" valueClobFile="../customer-data/CustomerDesc.json">

            <where>schema_name = 'engines'</where>

      </update>

</changeset>

Is there an existing bug in the code that doesn't let you reference a file path which is located more than 2 parent directories up?