How to combine 2 fields into 1 field, and insert into table

[bbmak]

I have a form which has the year and month fields in number from the table, but I want to add a field in the table, so it can insert the year month together which look like this, YYYYMM.
In the form, I have combine them using control source, =[year] & "" & [month] into 1 field, but how do I insert the unbound combine value into the table? I don't know how to bound them.

[June7]

Requires code to save calculated data. There is no need to do that, especially in this case. Saving calculated value is usually a bad idea. The combined value can be calculated when needed.

Since you have Access 2010, you can even use a Calculated type field in the table.

[bbmak]

for me, I am actually using =[year] & "" & [month] and before update event, I use me.year_month = me.year & me.month
how do I do that in calculated field?

[bbmak]

Thx, I got it.
yes, u r right. The calculated field is better.