авторэто получается, она выводит при каждом открытии окна новый билд? если в open-то? =)

Нет не получается, смотри хелп:

PB Help:

If the expression's value changes Because the expression's value is set to the variable when the script is compiled (not during execution) make sure the expression is not one whose value is based on current conditions. If you want to specify an expression whose value will be different when the application is executed, do not initialize the variable in the declaration. For such values, declare the variable and assign the value in separate statements.

Unwanted result In this declaration, the value of d is the date the script is compiled:

date d_date = Today( )

Wanted result In contrast, these statements result in d being set to the date the application is run:

date d_date

d_date = Today( )

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Гришин Дмитрий