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# LogiView

## How to Declare Variables and Constants

| ### What to do:
| Open the Variables-List mask from the Manager > Macro > LogiView > Declarations > Variables menu.
| The Variables-List mask is opened.
| Change to Insert mode with the button .
| Enter DOCU_INT_1 as variable name in the Name field.
| In variable names the first character must be a letter and they must not contain a hyphen.
| String variable with the format "CC-CC" (two characters - dash - two characters) are considered as a date.
| Please note that only capital letters must be used for variable names. Otherwise, variable import to DataView forms will be impossible.
| Click the Type field.
| Click the button . The selection menu is opened:
| Select the I -> Integer data type.
| Enter 0 in the Array Elements field.
| To save the entry click the button .
| Repeat steps 3 to 8 and enter the following values:
Name | Data Type | Array Elements
DOCU_INT_2 | I | 0
DOCU_STRING_1 | S | 0
DOCU_FLOAT_1 | F | 0
| Enter DOCU_LOGIC_SYSTEM as variable name in the Name field.
| Select L-> Logic Value as data type in the Type (Typ) field.
| Enter 0 in the Number field.
| Enter FALSE in the Default field.
| To save the entry click the button .
| Repeat steps 10 to 14 and enter the following values:
Name | Data Type | Array | Pre-initialization
DOCU_LOGIC_1 | L | 0 | FALSE
| The list should now look as follows:
| Constants are declared similarly in the Constants-List (Menu: Manager > Macro > LogiView > Declarations > Constants).