Change the text in thedrawning

Please find the error, any suggestions how to write it simply

(if (=  (setq zm1 (ssget "x" (list (cons 0  "text,mtext") (cons 8 desired_layer)))) nil)
	(progn
		(princ)
	)
	(progn
		(setq dl_zm1 (sslength zm1)
				z_zm1 0)
		(while (< z_zm1 dl_zm1)
				(setq nazwa_zm1 (ssname zm1 z_zm1))
				(setq lista_zm1 (entget nazwa_zm1))
				(setq ilosc1_zm1 (dxf 1 lista_zm1))
				(setq old_zm1 (cons 1 ilosc1_zm1))
				(setq new_zm1 (cons 1 text_to_be_entered))
				(setq lista_zm1 (subst new_zm1 old_zm1 lista_zm1))
				(entmod lista_zm1)
			(setq z_zm1 (+ z_zm1 1))
		)	
	)
)

Is this what you are after ?

(if (and (setq ss (ssget "x" (list (cons 0 "text,mtext") (cons 8 desired_layer))))
        (not (eq (setq st (getstring t "\n enter new string :"))""))
        )
(repeat (setq i (sslength ss))
   (setq sn (ssname ss (setq i (1- i))))
  (setq e (entget sn))
  (entmod (subst (cons 1 st) (assoc 1 e) e))
  )
 (princ)
 )

;(entwxy "ble ble" "Layer1")
(defun entwxy (Sn desired_layer / )
(if (setq ss (ssget "x" (list (cons 0 "text,mtext") (cons 8 desired_layer))))
(repeat (setq i (sslength ss))
   (setq sn (ssname ss (setq i (1- i))))
  (setq e (entget sn))
  (entmod (subst (cons 1 Sn) (assoc 1 e) e))
  )
 (princ)
 )
)

ERORR

; ----- Error around expression -----
(ASSOC 1 E)
;
; error : bad argument type <(1 . <Selection set: b3f1d38>)> ; expected <STRING> at [DXF/XED DATA]

He wants to take a standard feature

;(entwxy "ble ble" "Layer1")
(defun entwxy (Sn desired_layer / )
(if (setq ss (ssget "x" (list (cons 0 "text,mtext") (cons 8 desired_layer))))
(repeat (setq i (sslength ss))
   (setq sn (ssname ss (setq i (1- i))))
  (setq e (entget sn))
  (entmod (subst (cons 1[color=blue][b] Sn[/b][/color]) (assoc 1 e) e))
  )
 (princ)
 )
)

ERORR

; ----- Error around expression -----
(ASSOC 1 E)
;
; error : bad argument type <(1 . <Selection set: b3f1d38>)> ; expected <STRING> at [DXF/XED DATA]

 

He wants to take a standard feature

What are you trying to do ?

I want to change the text on the layer "Layer 1" to "blah blah" in the whole drawing.

I want to change the text on the layer "Layer 1" to "blah blah" in the whole drawing.

Replace your desired string with the one in blue color .. and do not forget to add your desired layer name as well .

(if (setq ss (ssget "x" (list (cons 0 "text,mtext") (cons 8[color=red][b] desired_layer[/b][/color]))))  
(repeat (setq i (sslength ss))     
(setq sn (ssname ss (setq i (1- i))))  
 (setq e (entget sn))   
(entmod (subst (cons 1 [color=blue][b]"blah blah"[/b][/color]) (assoc 1 e) e))    ) 
 (princ)  
)

This is not the same thing?

Calling "(entwxy "ble ble" "Layer1")"

and function:

(defun entwxy (Sn desired_layer / )
(if (setq ss (ssget "x" (list (cons 0 "text,mtext") (cons 8 desired_layer))))
(repeat (setq i (sslength ss))
   (setq sn (ssname ss (setq i (1- i))))
  (setq e (entget sn))
  (entmod (subst (cons 1 Sn) (assoc 1 e) e))
  )
 (princ)
 )
)

Sorry it's ok. I entered the wrong argument.Thank you this is what

Sorry it's ok. I entered the wrong argument.Thank you this is what

Not a problem .