# Socket\_send ? str\_cat suspend the UR3 program

**URL:** <https://forum.universal-robots.com/t/socket-send-str-cat-suspend-the-ur3-program/22457>\
**Category:** URCap Development\
**Created:** [July 5, 2022, 6:50pm UTC](https://forum.universal-robots.com/t/socket-send-str-cat-suspend-the-ur3-program/22457 "2022-07-05T18:50:35Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![anon5418811](https://avatars.discourse-cdn.com/v4/letter/a/977dab/32.png) [@anon5418811](https://forum.universal-robots.com/u/anon5418811)\
**Post date:** [July 5, 2022, 6:50pm UTC](https://forum.universal-robots.com/t/socket-send-str-cat-suspend-the-ur3-program/22457/1 "2022-07-05T18:50:35Z")

</div>

I want to send the text + variable For example: E1 0.9887  
I read a variable with a function

if value \> 0:  
socket\_open(“192.168.1.15”, 100, “socket\_29999”)

```
    zmiena = str_cat("E1",value) ??????????
    

    socket_send_string(zmienna, "socket_29999") ?????
    
    
    socket_close("socket_29999")
    #stop extruder
else:
  # start extruder
end

```

Str\_cat concatenation not working

socket\_send\_string(value, “socket\_29999”) \>\>works but how do I add E1 description before valute?