Using Jenkins RTC, trying to get the checkout to go directly to a directory

This is the checkout code within a try-catch statement:

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pipelineWorkspace = "${env.WORKSPACE}"

println "PipelineWorkspace is ${pipelineWorkspace}"

checkout scm : [ $class : "RTCScm", overrideGlobal: false, timeout:4800, buildType :[value:"buildDefinition", buildDefinition:"JOBIDStreamBuild", buildWorkspace:null, loadDirectory:"${pipelineWorkspace}"]]

Have tried with the loadDirectory but still points to RTC_EXTRACTS. Wondering if this problem can be solved or something RTC needs to carry out.