charting on contents of arrays

[xbb4095l]

Hello,
ot realize a project, i need to calculate
weeknumbers form a date then to count the
items and after this another calculation
with other datas. Therefore i realized all
with arrays. This works well. I can insert
all data of the array in the report.
But i don`t succeed to put the data in a
chart!
How can i do this?
Here my formulas that i use:
report header:
Shared NumberVar Array a_fehleranzahl := [0,0,0,0,0,0];

details:
Shared NumberVar Array a_fehleranzahl;
if {~CRPT_TMP0001_ttx.Fehler_Titel} <> &quot;geliefertedateien&quot; Then a_fehleranzahl[DatePart (&quot;ww&quot;,{~CRPT_TMP0001_ttx.Fehler_Datum} )]:= a_fehleranzahl[DatePart (&quot;ww&quot;,{~CRPT_TMP0001_ttx.Fehler_Datum} )] + 1

How can i output the values of the Array a_fehleranzahl in a chart?