Hi Thierry,

I fixed the problem. Instead of referring to TableAlias.ColumnName in the refresh method of the button I used this.parent.edtHtml.value and that solved the issue. Apparently the InteractiveChange method doesn't perform the "binding", it happens later (in valid method).

>Hi Naomi,
>
>I could probably help with a clearer and more concise explanation, perhaps additional code excerpts could help understanding.
>
>>Hi everybody,
>>
>>I have a complex form and in the Init of this form I bind InteractiveChange event of many objects to a new InfoChanged method of the form. This works great.
>>
>>Now, I have an Edit Box for entering HTML and I have a Preview button on the form to show that HTML in the Browser. I want this prevew button to be enabled when something is entered in the HTML.
>>
>>So, I have the following code in the refresh method of the button
>>
>>

>>this.Enabled = not eof() and not empty(HTML)
>>

>>
>>And in the InteractiveChange of the HTML editbox I try
>>
>>

>>this.parent.cmdPreview.Refresh()
>>

>>
>>However, nothing seems to happen, the code in InfoChanged method works, but my button remains disabled even after I typed a few keystrokes.
>>
>>So, I am wondering what is the source of the problem - is it because the "binding" of the value in edtHTML to the table.HTML happens in the Valid event and therefore checking Alias.HTML doesn't help?
>>
>>What do you think?
>>
>>Thanks in advance.
>>
>>UPDATE. Never mind this question, please. My suspicion was correct.