well, the described way using the start url with single patameters for each subquestion
is much too long.
So you have to get creative.
You only need a well defined structure with the 36 values.
Code:
{join(intval(F13_1_1),intval(F13_1_2),intval(F13_1_3),intval(F13_1_4), intval(F13_2_1),intval(F13_2_2),intval(F13_2_3),intval(F13_2_4), intval(F13_3_1),intval(F13_3_2),intval(F13_3_3),intval(F13_3_4), intval(F13_4_1),intval(F13_4_2),intval(F13_4_3),intval(F13_4_4), intval(F13_5_1),intval(F13_5_2),intval(F13_5_3),intval(F13_5_4), intval(F13_6_1),intval(F13_6_2),intval(F13_6_3),intval(F13_6_4), intval(F13_7_1),intval(F13_7_2),intval(F13_7_3),intval(F13_7_4), intval(F13_8_1),intval(F13_8_2),intval(F13_8_3),intval(F13_8_4), intval(F13_9_1),intval(F13_9_2),intval(F13_9_3),intval(F13_9_4))}
You see I called the Parameter F13Para.
Now the second survey.
In my opinion this is all you need you have a well defined structure and can access the value of each cell.
Especially as the array itself is hidden.
Code:
{F13_1_1=if(substr(F13Para,0,1)=="1",1,'')}
{F13_1_2=if(substr(F13Para,1,1)=="1",1,'')}
{F13_1_3=if(substr(F13Para,2,1)=="1",1,'')}
{F13_1_4=if(substr(F13Para,3,1)=="1",1,'')}
{F13_2_1=if(substr(F13Para,4,1)=="1",1,'')}
{F13_2_2=if(substr(F13Para,5,1)=="1",1,'')}
{F13_2_3=if(substr(F13Para,6,1)=="1",1,'')}
{F13_2_4=if(substr(F13Para,7,1)=="1",1,'')}
{F13_3_1=if(substr(F13Para,8,1)=="1",1,'')}
{F13_3_2=if(substr(F13Para,9,1)=="1",1,'')}
{F13_3_3=if(substr(F13Para,10,1)=="1",1,'')}
{F13_3_4=if(substr(F13Para,11,1)=="1",1,'')}
{F13_4_1=if(substr(F13Para,12,1)=="1",1,'')}
{F13_4_2=if(substr(F13Para,13,1)=="1",1,'')}
{F13_4_3=if(substr(F13Para,14,1)=="1",1,'')}
{F13_4_4=if(substr(F13Para,15,1)=="1",1,'')}
{F13_5_1=if(substr(F13Para,16,1)=="1",1,'')}
{F13_5_2=if(substr(F13Para,17,1)=="1",1,'')}
{F13_5_3=if(substr(F13Para,18,1)=="1",1,'')}
{F13_5_4=if(substr(F13Para,19,1)=="1",1,'')}
{F13_6_1=if(substr(F13Para,20,1)=="1",1,'')}
{F13_6_2=if(substr(F13Para,21,1)=="1",1,'')}
{F13_6_3=if(substr(F13Para,22,1)=="1",1,'')}
{F13_6_4=if(substr(F13Para,23,1)=="1",1,'')}
{F13_7_1=if(substr(F13Para,24,1)=="1",1,'')}
{F13_7_2=if(substr(F13Para,25,1)=="1",1,'')}
{F13_7_3=if(substr(F13Para,26,1)=="1",1,'')}
{F13_7_4=if(substr(F13Para,27,1)=="1",1,'')}
{F13_8_1=if(substr(F13Para,28,1)=="1",1,'')}
{F13_8_2=if(substr(F13Para,29,1)=="1",1,'')}
{F13_8_3=if(substr(F13Para,30,1)=="1",1,'')}
{F13_8_4=if(substr(F13Para,31,1)=="1",1,'')}
{F13_9_1=if(substr(F13Para,32,1)=="1",1,'')}
{F13_9_2=if(substr(F13Para,33,1)=="1",1,'')}
{F13_9_3=if(substr(F13Para,34,1)=="1",1,'')}
{F13_9_4=if(substr(F13Para,35,1)=="1",1,'')}
1. survey
2. survey