Design Studio 1.6 Metadata .getinfo().lastdataupdate Not returning any value

Hello experts,

I have below code in application start up with backend as BW on RDBMS. Below methods are not returning any value, all i could see is the static text.

TXT_UPDATE.setText("Last Data Update: " + DS_PA_DETAIL.getInfo().lastDataUpdate) ;

TXT_REFRESH_DATE.setText("Last Refreshed at : " + DS_PRICE_ANALYZER.getInfo().lastRefreshedAt)

However this method is working as expected DS_PRICE_ANALYZER.getInfo().infoProviderTechnicalName

Please advice how can i debug this issue.