Reposting this code solution so that it is readable and usable for anyone who may find this in the future:
DEFINE FILE ggsales
AMP_YYMD/YYMD = &YYMD;
DATE_YYMD/YYMD = AMP_YYMD - SEQ_NO + 1;
DATE_YYMt/YYBMt = DATE_YYMD;
DATE_D/D = DATE_YYMD;
END
GRAPH FILE ggsales
SUM UNITS
BY DATE_YYMt
BY DATE_D
WHERE WHERE SEQ_NO FROM 50 TO 70
ON GRAPH PCHOLD FORMAT JSCHART
ON GRAPH SET VZERO OFF
ON GRAPH SET LOOKGRAPH BAR
ON GRAPH SET AUTOFIT ON
ON GRAPH SET STYLE *
TYPE=DATA, COLUMN=N1, BUCKET=x-axis, $
TYPE=DATA, COLUMN=N2, BUCKET=x-axis, $
TYPE=DATA, COLUMN=N3, BUCKET=y-axis, $
*GRAPH_SCRIPT
setFillColor(getSeries(0),new Color(#5388be));
setLabelStagger(getO1Label(),true);
*GRAPH_JS_FINAL
"xaxis": {
"labels": {
"nestingConcatSymbol": undefined
}
}
*END
ENDSTYLE
END