Macros involving SOLVER... function

[Pixies]

My intial problem was to solve a simultaneous equation using excel.

You can do this using Tools > Solver...

Now I wanted to create a macro so everytime I change my constraints< I
can run the macro which would in turn run the commands in Solver...

I did this BUT when I actually ran the macro again I got this error:

Compile Error:
Sub or Function not defined.

Macro:
Sub last()
'
' last Macro
' Macro recorded 19.04.2006 by Lewis Holland
'

'
SolverOk MaxMinVal:=1, ValueOf:="0", ByChange:="$D$9:$D$10"
SolverAdd CellRef:="$A$9:$A$10", Relation:=2,
FormulaText:="$B$9:$B$10"
SolverOk MaxMinVal:=1, ValueOf:="0", ByChange:="$D$9:$D$10"
SolverSolve
End Sub

Can anyone help solve this?
Can you record a macro which actually uses this Solver.. function?

 

[Dana DeLouis]

In the vba editor, go to Tools | Reference, and set a reference to "Solver."
In your code, I believe your left out a reference to the Target Cell (ie
SetCell).
If you keep calling Solver, you will eventually have too many redundant
constraints.
I find it best to start from scratch with SolverReset.

SolverReset
SolverOk SetCell:="A1", MaxMinVal:=1, ByChange:="D910"
SolverAdd CellRef:="A9:A10", Relation:=2, FormulaText:="B9:B10"
SolverSolve True

 

[Pixies]

Ok I added the reference & tried your other suggestions too.

The Macro seems to be running, but I don't get a solution.

Better explanation of my problem:
A B D
8 Eqn Const. Solution
9 0 62%
10 0 38%

A/B/D Are columns, 8,9,10 the rows.
A9: Formula A (Depending on d9 & 10)
A10: Formula B (Depending on d9 & 10)

Formula A = B9
Formula B = B10

As far as I know I had no reason to enter anything into the SetCel
Section. I edited your suggestion to the following but still n
sucess:

SolverReset
SolverOk SetCell:="", MaxMinVal:=1, ValueOf:="0"
ByChange:="D910"
SolverAdd CellRef:="A9:A10", Relation:=2, FormulaText:="B9:B10"
SolverSolve True
End Su

 

[Dana DeLouis]

As far as I know I had no reason to enter anything into the SetCell

Section.

I don't think Solver knows by default which cell you are trying to
maximize.
As a side note, when Maximizing, Solver ignores the ValueOf:=0.

 

[Pixies]

Ok.
I tried doing it exactly as you said.

But I didn't get any output.
Any reason for that?

(For extra info)
When I do the same process manually:
I am ignoring top section.
I get an output in D910, which is correct for the 2 simultaneou
equations I have got.

Excuse my ignorance with Macro's - it's my first time. Althought I hav
done other programming etc

 

[Pixies]

Can you help me with the problem