Elasticsearch update by query using NEST

Elastic Stack Elasticsearch
1

Can anyone help how to pass paramter dynamically in update by query using nest c# .

var test= highLevelClient.UpdateByQuery(u => u
.Index("test")
.Type("doc")
.Query(q => q
.Term("_id", id)
)
.Script(("ctx._source.name=" + name.ToString() ))
.Conflicts(Conflicts.Proceed)
.Refresh(true)
);

Can anyone help me it is throwing me error