My CityGML exported by CityGML writer is described for appearance as follows:

<app:appearanceMember>

  <app:Appearance>

   <app:theme>FMETheme</app:theme>

   <app:surfaceDataMember>

    <app:ParameterizedTexture>

     <app:imageURI>

I would like to chage those to the following description

<core:cityObjectMember>

     <bldg:Building gml:id="xxxxxxxxx-xxxx-xxxx-xxxxx-xxxxxxxxxxxx">

        <creationDate>2020-10-01</creationDate>

        <app:appearance>

        <app:Appearance>

        <app:theme>texturation</app:theme>

           <app:surfaceDataMember>

              <app:ParameterizedTexture>

Could you tell me the solution?