Hello there,
I got excited to use this chart extension until I ran into this issue where we can't get drilldown to work. Here's a sample that i'm playing with. Please let me know if anyone encountered this behavior yet.

-* File: IBFS:/localhost/EDA/EDASERVE/APPPATH/baseapp/Chart1.fex Created by WebFOCUS AppStudio
-*IA_GRAPH_BEGIN
-*Do not delete or modify the comments below
*-INTERNAL_COMMENT LINE#0$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
*-INTERNAL_COMMENT LINE#1$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
-*Do not delete or modify the comments above
ENGINE INT CACHE SET ON
SET PAGE-NUM=NOLEAD
SET ARGRAPHENGINE=JSCHART
SET EMBEDHEADING=ON
SET GRAPHDEFAULT=OFF
-DEFAULTH &WF_STYLE_UNITS='PIXELS';
-DEFAULTH &WF_STYLE_HEIGHT='405.0';
-DEFAULTH &WF_STYLE_WIDTH='770.0';
-DEFAULTH &WF_TITLE='WebFOCUS Report';
GRAPH FILE car
-* Created by Info Assist for Graph
SUM CAR.BODY.SEATS
ON GRAPH PCHOLD FORMAT JSCHART
ON GRAPH SET VZERO OFF
ON GRAPH SET GRWIDTH 1
ON GRAPH SET UNITS &WF_STYLE_UNITS
ON GRAPH SET HAXIS &WF_STYLE_WIDTH
ON GRAPH SET VAXIS &WF_STYLE_HEIGHT
ON GRAPH SET LOOKGRAPH EXTENSION
ON GRAPH SET AUTOFIT ON
ON GRAPH SET STYLE *
*GRAPH_SCRIPT
setPieDepth(0);
setPieTilt(0);
setDepthRadius(0);
setPlace(true);
setCurveFitEquationDisplay(false);
*END
INCLUDE=Warm.sty,$
TYPE=REPORT, TITLETEXT=&WF_TITLE.QUOTEDSTRING, $
TYPE=DATA, COLUMN=N1, ALT='carinst', TARGET='_blank', BUCKET= >value, FOCEXEC=carinst, $
*GRAPH_SCRIPT
setReportParsingErrors(false);
setSelectionEnableMove(false);
*GRAPH_JS_FINAL
"pieProperties": {
    "holeSize": "0%"
},
"chartType": "com.ibi.liquid_gauge",
"agnosticSettings": {
    "chartTypeFullName": "com.ibi.liquid_gauge"
}
*END
ENDSTYLE
END
-RUN

-*IA_GRAPH_FINISH
  

Thanks so much!

This message has been edited. Last edited by: FP Mod Chuck,

Vaayu

I have reproduced the same behavior on my machine, I suspect this is a bug and you should open a case with techsupport and report it.