[RBASE-L] - Re: Create variable on the fly

[Jim Limburg]

Just to clarify what I have said it would look like this:

'''Somewhere in the code/forms/eeps before the var v1 should
be used and declared.
Now you want to see if it exists...

SET VAR v1 TEXT
IF v1 IS NOT NULL THEN
  --Do your work where cause v1 is already populated
ELSE
  pause for 2 using 'ERROR: variable is not defined' at center center
  DIALOG 'Enter value for v1' v1 vEndKey 1
  GOTO bypass4err
ENDIF
Jim

Jim Limburg wrote:
James

Just use

SET VAR v1 TEXT

... or whatever datatype is is delcared to as before. Be sure to
keep the datatypes the same though..
Don't set it to null. Doing it this way will not clear the variables
setting if it already exist, but well set it to NULL if it doesn't exist.
Jim Limburg



James Hageman wrote:

I want to be able to find out if a variable exists and if not to 
create it and then pronpt the user to assign a value to it.

I thought I could do something like :

IF (IFEXIST(v1,.v1,NULL)) IS NULL THEN
     DIALOG 'Enter value for v1' v1 vEndKey 1
ENDIF
But I get an error message telling me v1 doesnt exist, Right! I know.