Detect when a cell is changed in a tableview

Hi,
is it possible to know when a cell in a tableview is modified, for instance, when a user write data into a cell, any event is raised to get the text written or the position of the cell modified? I've seen the events associated to a tableview and no one seems to fit my needs.
Any hint on this topic
thank you very much

thank you for the information Durairaj, but I'm not very sure of how to do this. Could you give any example on this topic?

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Attachments:
Changed.vi ‏22 KB

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I'm sorry for the intrusion on this thread. I had only made a simple comment, and then others responded. It was not my intention, especially since the original question was marked as answered. I will direct responses to any comments I make in fture postings that deviate from the OP's question to a newly created topic if I need a response, if not, I will just add a statement at the end of my comments to please not respond.
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Hi Tassytiger,
A "string" is just a string of characters. Examples are qwerty, 123abc, 43πbono. there are several ways to write one. A more precise description of your end goal might help answer "How do I write a string."
To the current version of your specific question:
What I actually need to achieve is a situation where, when I enter <17 Char. or >17 Char.
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I don't wish to add any columns to my s/s but would like to apply the rule to the current column just as i would change the text or fill colour.
The difficulty there is that a cell may contain entered data, OR it may contain a formula. You want to enter data (a string of characters) and you want to produce an error triangle if that string has more or fewer than 17 characters. Evaluating the length of the string requires a formula. Getting the string into the cell requires direct entry (in your scenario). The two are not compatible within the content of a single cell.
Terry's example uses a formula in column B to measure the length of the string in column A. If the length is 17 characters, the IF statement produces the empty string ( "" ), and the cell in column B appears empty. If the string is not 17 characters long, the IF statement produces the string "Not 17 Chars!"
His formula is easily changed to produce an error triangle in place of "Not 17 Chars!":
B1: =IF(LEN(A1)=17, "",17/0)
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But, as with all of the other suggestions, this one will require a new column to provide space for the formula and it's result.
Changing the text or fill colour can be done using conditional formatting. Changing content of the cell (eg. choosing between the entered string of characters and the error triangle) cannot.
Conditional formatting rules compare the content of a the cell to be formatted with either a fixed value (written into the rule) or to the content of another cell. In my examples (and in Ian's examples) above the rules compared the content of the cell to be formattes to the number '17'. The number was generated by a formula which measured the length (in characters) of the text in the cell where the ID was entered, and reported that length as a number.
A way to show a red triangle using conditional formatting is to use Image fill as the default fill of the cell, then use a colour fill as the conditional fill to hide the trialngle when the conditions are met. Here's the same example as used above, with this technique applied to column B:
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This is the rule for cell A2. In A3, the cell reference is to Table 2::A3, and in A4, to Table 2::A4. The cell references in conditional format rules must be edited individually.
Regards,
Barry

Detect when a cell is changed in a tableview

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