Subquery don't work using microsoft analysis services.

I'm using a subquery like this link https://www.flexmonster.com/blog/how-to-use-subquery-parameter-for-faster-data-loading/ but not filtering.The Flexmonster Accelerator Manager Log MDX querys every change, but it's not using the subquery.my code:
     "dataSource": { "dataSourceType": "microsoft analysis services",
     /* URL to the Data Speed Accelerator */
     "proxyUrl": "https://myserver.com.br:50005/",
     /* Catalog name */
     "catalog": "My Cube",
     /* Cube name */
     "cube": "My Cube",
     "subquery": "select {[Dimension].[Property].&[Value]} on columns from [MyCube]",
     /* Flag to use Data Speed Accelerator instead of XMLA protocol */
     "binary": true
}