Deleting certain fields behaves strangely

[Alex Tweedly]

I think the problem is that you are referring to the fields by *number* 
- so when you delete the first one - it's gone. So now the (old) "field 
2" has become "field 1"

Try doing your loop as
    repeat with tField = the number of fields *on* card targetCard down to 1

-- Alex.

On 02/09/2013 12:59, Pascal Lehner wrote:
> Hi all
>
> I have a script that creates fields named "Point1", "Point2" ... describing
> certain data points on a graph. This works fine. However, when the number
> of Points on the new graphic is smaller than on the old, I have old
> "PointX" that remain from the previous graphc. Thus I want to implement a
> delete routine to get rid of all fields and recreate them.
>
> In the current example I have 6 data points called
> Point1 to Point6
>
> <code>
> *repeat* with tField = 1 to the number of fields *on* card targetCard
> *  put* the short name of field tField into tFieldName
> *    if* tFieldName contains "Point" *then
> **      put* "Deleting field no." && tField && "named" && tFieldName
>        *delete* field tFieldName
>      *end* *if*
> *end* *repeat
> *</code>
> However, the following shows a very strange behavior I cannot understand
> just now.
> When I run it, it deletes Point1, Point3, Point5 but does not care about
> the even numbers and breaks with an error message "Chunk: no such object".
> When I run it again just afterwards, Point4 is the only survivor, same
> error message.
> When I run it a third time, Point4 is removed and the new graph is drawn
> correctly.
>
> Can you spot the issue? It is LiveCode Community 6.1.1. RC4
>
> Thanks,
>
> Pascal
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