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# LogiView

## Command 'field_read'

| Use this command to read the contents of a mask field. The command works similar to the DataView programming interface function 'mas_rea_fld'.
| This command allows long-text fields. This command must not be called in a conditional instruction. The database is not accessed!
| ### Syntax:
| field_read({WDG_ID},{FLD},{ROW},{VAR})
| ### I/O parameters:
| {WDG_ID} | ID of mask widget
| {FLD} | Name of field
| {ROW} | Row
| {VAR} | Variable to be initialized with the field contents
| ### Return value:
| - |
| ### Example:
| Declaration of Variables
    50 DOCU_INT_1=widget_id()
    60 field_read(DOCU_INT_1,"T_MASTER_DAT.BOM_FLAG",1,DOCU_INT_2)
| Result: The variable "DOCU_INT_2" is defined with the contents of the first line of field "T_MASTER_DAT.BOM_FLAG".
| Functions and commands: Modification of Fields