Can't get total field in form to update

Great Day, I have a form that calculates service items performed by a technician. Each time the user enters a service item and and associated cost or if he/she edits an existing cost, I want txtRepairTotal to update, but this does not happen until I move away from the record and then return. I have Do.Cmd.Requery "txtRepairTotal" in the AfterUpdate event, but it is not giving me the expected results. There is no change to txtRepairTotal.

Thanks in advance for your assistance,

r/David
yddadsjd95Asked:
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BusyMamaCommented:
[txtRepairTotal].Refresh

I think will work
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dqmqCommented:

me.refresh
docmd.requery
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dqmqCommented:
Perhaps I jumped the gun. What is the control source for txtRepairTotal?
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yddadsjd95Author Commented:
Thank you BusyMama for reaching out, but the code did not work.

dgmg, the control source for txtRepairTotal is the sum of the individual repair cost - =(Sum([RepairCost])), and your code did work. Thank you much.

Everyone have a great day and an even finer day tomorrow!

r/David
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Rey Obrero (Capricorn1)Commented:
you have to create a function that computes the total and call the function in the afterupdate event of
*service item
*associated cost
*existing cost
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