how can I add the bin counts as a lable to the bar plot (above or in the center)? The bin worksheet isn't editable so I can't add a column with type label!
You might copy the bin worksheet and add the label column, but then I loose the automatic update by defining the binning/stepwidth ...
I would do this: Create a second worksheet that uses the Set Column Values and AutoUpdate features to "track" the values in your Bin1 worksheet. All you need are the A(X) and Counts1(Y) columns and a third Label column that tracks the Counts1 column values (be sure to turn on the AutoUpdate check box in each Set Column Values dialog box in the new worksheet).
Then you can plot the new worksheet as a conventional column plot. If you prefer to have no gap between the bars, set the Gap Between Bars (in %) drop down (on the Spacing tab in the Plot Details dialog box) to 0.