String is Non-Numeric

[JRN30]

I am new to this message board and have only worked with Crystal for a short time.

Question is this:
When I remove a flag from the selection criteria, which is {OEFCHEADER_1_NF.OECH_CM_FLAG} = 1.00 (it's a number field)to only show Invoice credits, it affects another formula field which is:
ToNumber (Mid ( ToText({OEFCHEADER_1_NF.OECH_INVOICE_DATE}, 0, "&quot, 5, 2))
With this formula, I am extracting the month out. I am getting an error saying the above string is Non-Numeric. If I put the selection criteria back in, it works fine.

Not sure if this is enough information...however if anyone has any suggestions, it would be greatly appreciated.

 

[Bond7]

Hi,

Delete Tonumber from the formula and test run it and check for the result.

Mid ( ToText({OEFCHEADER_1_NF.OECH_INVOICE_DATE}, 0, "&quot, 5, 2)

There may be data error, one of the field values could be text. This way you can find the problem record and fix the value in database.

 

[synapsevampire]

To get rid of the error, use the following:

if isnumeric(ToNumber (Mid ( ToText({OEFCHEADER_1_NF.OECH_INVOICE_DATE}, 0, "&quot, 5, 2))) then
ToNumber (Mid ( ToText({OEFCHEADER_1_NF.OECH_INVOICE_DATE}, 0, "&quot, 5, 2))
else
0

If you need this data to be accurate for your report, I'd create a real date field using a SQL Expression in Crystal and then yse a record selection formula to eliminate the offending rows from the result set and just use the MONTH() function against the SQL Expression returned date.

-k