convert a string into a path

[JonathanK]

I want to assign a value of a station global variable (type: number) to local variable (type: number).

The problem is, that a know the right path of the station global variable at runtime.

I have an string variable like "StationGlobals.PARAMETER.SWITCH.xx.nRESISTOR_VALUE" - the characters "xx" will be replaced at runtime...

Now I want to convert this string variable into a path in order to assign the local variable (type: number) the value of the station global variable (type: number)

Do you know how I can do it?

greetz

Jonathan K.

[RayFarmer]

Hi,

are you saying you want to extract what the value of xx and insert into a local or StationGlobal.

or

are you wanting to change the xx to some value in "StationGlobals.PARAMETER.SWITCH.xx.nRESISTOR_VALUE" at runtime

if the latter then you would need to convert the xx as a value to a string such as

"StationGlobals.PARAMETER.SWITCH." + str(locals.switch_value) +".nRESISTOR_VALUE", you would probably have to format the string value using the string format which I think is the second parameter of the function str() if you actually what two characters eg 1 would be "01"

if the first then you would use Locals.Switch = Val(mid("StationGlobals.PARAMETER.SWITCH.xx.nRESISTOR_VALUE", 32, 2))

[JonathanK]

neither ... nor

I try to explain my problem once again:

There are some StationGlobals e.g.

StationGlobals.PARAMETER.SWITCH.MVS.nRESISTOR_VALUE = 220

StationGlobals.PARAMETER.SWITCH.BLS.nRESISTOR_VALUE = 5980

StationGlobals.PARAMETER.SWITCH.HVS.nRESISTOR_VALUE = 580

...

and there is a Local... e.g.:

Locals.nCurrentResistorValue = NaN

Now I want to assign Locals.nCurrentResistorValue one of the StationGlobals. The problem is, that I get the information which of the StationGlobals I have to use at runtime.So I have a Local String Variable e.g.

during development: Locals.sFunctionPath = ""

at runtime: Locals.sFunctionPath = "StationGlobals.PARAMETER.SWITCH.HVS.nRESISTOR_VALUE"

Finally I want to assign Locals.nCurrentResistorValue the value which is behind the Locals.sFunctionPath.

something like:

Locals.nCurrentResistorValue = Val(Locals.sFunctionPath) [= 580]

But this expression doesn't work...

Do you a way I can handle it?

[RayFarmer · Accepted solution]

Try

Locals.nCurrentResistorValue = Evaluate(Locals.sFunctionPath)