Question : MS Access Update a field based on multiple field values

Sample Table:
ID      Call Type                 CALL TYPE EXT          8:01am-4:59pm                 5pm-8am
2      STANDARD CALL       TOW                      $18.00                             $23.00
3      JUMP START               J/S                               $18.00                              $23.00
4      TOL (JSO)              TOL                               $18.00                              $23.00
5      TOL (FHP)              FHP                               $18.00                              $23.00
6      WINCH OUT              W/O                               $18.00                              $23.00
7      TOW AWAY              TAW                       $18.00                              $23.00
8      TIRE CHANGE              T/C                               $10.00                              $10.00
9      RELEASE                      R/S                               $10.00                              $10.00
10      AUCTION CARS      AUCTION                       $10.00                              $10.00
11      ASAP WHEELS      ASAP TOW               $18.00                              $23.00
12      HOURLY PAY         H/R                              $14.00                              $14.00
13      MILLAGE PAY               M/P                           $0.35                               $0.35
 
Based on that table information i have a form with Start_miles, End_miles, Start_time, End_time, Call_type, and Drivers_pay. on the Call_type is a drop down list with the information above and sets to CALL TYPE EXT so what i need to a button to put in drivers pay auto based on that for example, start miles: 10, end miles 20, start time 8:00pm, end time 9:00pm call type: TOW so drivers pay would be $23, another example :start miles: 10, end miles 20, start time 8:00pm, end time 9:00pm call type: M/P so drivers pay would be end miles - start miles (10) X $.35 = $3.50, last Example would be:start miles: 10, end miles 20, start time 8:00pm, end time 9:00pm call type: H/R so drivers pay would be end time - start time=1hr X $14 = $14 Please help this could also be done on after update on a field i need this so i can lock the drivers pay so my drivers can not edit their pay!!

Answer : MS Access Update a field based on multiple field values

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Refer this:
http://technet.microsoft.com/en-us/library/aa997826%28EXCHG.65%29.aspx

Hope this helps,
Shree
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