Variables/Placeholders in TEAL program
You can define variables or placeholders in your TEAL program. During compilation, the IDE will ask to input values for these variables.
The variable name should always start with a prefix VAR_TMPL_ .
Example:
#pragma version 2
int VAR_TMPL_AMOUNT
txn Amount
...
...
In the above example, when you compile the TEAL program, you need to enter VAR_TMPL_AMOUNT variable value. The IDE automatically detects all variables start with VAR_TMPL_ and asks the user for the variable values if required. The IDE then creates the final source file in build/generated_src folder and then compile the final source file using the configured compiler (goal or Algorand node).